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BNC: 514 COCA: 536

base
1 base /ˈbeɪs/ noun
plural bases
1 base
/ˈbeɪs/
noun
plural bases
Learner's definition of BASE
1 
[count] : the bottom or lowest part of something : the part on which something rests or is supported底部；根基；底座— usually singular通常用单数
— often used figuratively常用作比喻
2 
[count] : something (such as a group of people or things) that provides support for a place, business, etc.基础；支柱— usually singular通常用单数
— see also power base, tax base
3 
[count] : a main ingredient to which other things are added to make something主要成分；底料 — usually singular通常用单数
4 
a  [count] : the main place in which a person works or lives or a business operates基地；总部；主要场所
b  : a place where a military force keeps supplies and where people in the military live and work军事基地
[count]
[noncount]
— see also air base
5 
baseball : any one of the four places a runner must touch in order to score垒；垒位
[count]
[noncount]
— compare home plate; see also first base, second base, third base
6 
[count] chemistry : a chemical that reacts with an acid to form a salt
◊ A base has a pH higher than 7.碱，盐基（pH值高于7）
 — compare 1acid 1, ph
7 
[count] mathematics : a number on which a system for counting and calculating is established基数— usually singular通常用单数

cover all the bases

also cover every base
: to do or include everything that needs to be done or included面面俱到；无所不包

off base

US, informal
1 
: not correct : wrong or mistaken不对的；错误的
2 
: in an unprepared state措手不及的；无准备的

touch all the bases

chiefly US or touch every base
: to cover all the bases谈及所有相关事项
especially : to mention every subject or point that needs to be considered

touch base

informal
: to meet and talk as a way of learning about recent news联系，谈论（以了解最新动态）
— usually + with
2 base /ˈbeɪs/ verb
bases; based; basing
2 base
/ˈbeɪs/
verb
bases; based; basing
Learner's definition of BASE
[+ object]
: to have a particular place as the main place where a person works or lives or where a business operates以…为总部（或据点、大本营）；驻扎
— often used as (be) based常用作(be) based

base on/upon

[phrasal verb]
base (something) on/upon (something)
: to form, make, or develop (something, such as an opinion, decision, or calculation) by using (something, such as information) as a basis, starting point, etc.基于；以…为基础
3 base /ˈbeɪs/ adjective
3 base
/ˈbeɪs/
adjective
Learner's definition of BASE
1 
[also more base; most base] formal + literary baser; basest : not honest or good不诚实的；不良的；卑鄙的
2 
technical, of a metal : having low quality and value（金属）低质的，不值钱的

— basely

adverb

— baseness

noun [noncount]
BNC: 514 COCA: 536

base

1 of 4

noun

ˈbās How to pronounce base (audio)
plural bases ˈbā-səz How to pronounce base (audio)
1
a
: the bottom of something considered as its support : foundation
the base of the mountain
the lamp's heavy base
b
biology : that part of a bodily organ by which it is attached to another more central structure of the organism
the base of the thumb
c architecture
(1)
: the lower part of a wall, pier, or column considered as a separate architectural feature
(2)
: the lower part of a complete architectural design (as of a monument)
d mathematics
(1)
: a side or face (see face entry 1 sense 5a(5)) of a geometrical figure from which an altitude (see altitude sense 1c(1)) can be constructed
especially : a side or face on which the figure stands
the base of a triangle
(2)
: the length of a base
determining the triangle's base
2
a
: a main ingredient
paint having a latex base
b
: a supporting or carrying ingredient (as of a medicine)
c
: a first or bottom layer of something on which other elements are added
Overnight, Utah's famous snow has freshly blanketed both runs, adding to a solid base of three feet … Abby Carroll
3
a
: the fundamental part of something : groundwork, basis
the book's theoretical base
her broad base of knowledge
b
: something (as a group of people) that reliably provides support (such as for a business or political candidate)
—usually singular
efforts to expand their customer basethe band's fan baseBut I do believe that that's a very sore point with many Democrats and could be used to energize their base. John McCain
c
Marxism : the economic factors on which all legal, social, and political relations are formed
4
a
: the starting point or line for an action or undertaking
plans to make this city his base of operation J. A. Loftus
b
: a baseline in surveying
c
: a center or area of operations
The company has its base in London.
: such as
(1)
: a permanent military installation
a naval base
The troops were ordered back to base.
(2)
: the place from which a military force draws supplies
(3)
: a place where military operations begin
d
linguistics : root sense 6
"Leave" is the base of the verb "left."
e mathematics
(1)
: a number (such as 5 in 56.44 or 57) that is raised to a power (see power entry 1 sense 5a)
especially : the number that when raised to a power equal to the logarithm of a number yields the number itself
The logarithm of 100 to the base 10 is 2 since 102 = 100.
(2)
: a number equal to the number of units in a given digit's place (see place entry 1 sense 8) that for a given system of writing numbers is required to give the numeral 1 in the next higher place
The decimal system uses a base of 10.
also : such a system of writing numbers using an indicated base
Convert from base 10 to base 2.
(3)
: a number that is multiplied by a rate or of which a percentage or fraction is calculated
To find the interest on $90 at 10 percent multiply the base 90 by .10.
5
a
: any one of the four stations at the corners of a baseball or softball infield
allowing the batter to reach base
b
in various games : the starting place or goal
c
: a point to be considered
His opening remarks touched every base.
6
chemistry
a
: any of various typically water-soluble and bitter tasting compounds that in solution have a pH greater than 7, are capable of reacting with an acid to form a salt, and are molecules or ions able to take up a proton from an acid or able to give up an unshared pair of electrons to an acid
b
: any of the five purine or pyrimidine bases of DNA and RNA that include cytosine, guanine, adenine, thymine, and uracil
7
finance : a price level at which a security (see security sense 3) previously declining in price resists further decline
8
heraldry : the lower part of a heraldic field (see field entry 1 sense 3c)
9
linguistics : the part of a transformational grammar that consists of rules and a lexicon and generates the deep structures of a language
10
: an electrode that modulates the current flowing through a bipolar junction transistor according to the voltage applied to the electrode
This gate, which is called a grid in a tube and a base in a transistor, enables a small "controlling" voltage to turn on and off a much larger voltage between the cathode and the anode. Thom Hartmann
compare gate entry 1 sense 5b
baseless
ˈbā-sləs How to pronounce base (audio)
adjective

Illustration of base

Illustration of base
  • 1 upper torus
  • 2 scotia
  • 3 lower torus
  • 4 plinth
  • 5 shaft
  • 6 fillets

base

2 of 4

verb

based; basing

transitive verb

1
: to find a foundation or basis for : to find a base (see base entry 1 sense 3a) for
—usually used with on or upon
base an opinion on faulty informationa story based upon real-life events
2
: to make, form, or serve as a base for
… great roots based the tree columns … George Macdonald
the company is based in London
clients who are based out of their homes

base

3 of 4

adjective (1)

1
a
: lacking or indicating the lack of higher qualities of mind or spirit : ignoble
seemed a base betrayal of idealism L. M. Sears
appealing to a person's baser instincts
b
: lacking higher values : degrading
a drab base way of life
2
a
: being of comparatively low value and having relatively inferior properties (such as lack of resistance to corrosion)
a base metal such as iron
compare noble entry 1
b
: containing a larger than usual proportion of base metals
base silver denarii
3
feudalism
a
: resembling a villein : servile
a base tenant
b
: held by villenage
base tenure
4
archaic : of little height
… the cedar stoops not to the base shrub's foot … Shakespeare
5
archaic : baseborn
… base in kind and born to be a slave. William Cowper
6
obsolete : low in place or position
… fall to the base earth from the firmament! Shakespeare
7
obsolete : bass
basely adverb
baseness noun

base

4 of 4

adjective (2)

1
: constituting or serving as a base
This situation is frequently encountered by seaplane pilots in northern Canada who must fly over lakes and tundra to a base camp located on a river. Alan Lopez
2
: of the simplest or most basic design or form : having the form of something before upgrades or customization
This GTO's 350-hp, 5.7-liter V8 is the same that's used in the base Corvette, and it produces the power and throaty exhaust sound of a classic muscle car. Consumer Reports
Phrases
cover all the bases or less commonly cover every base or have (all) one's bases covered
: to do or include everything that needs to be done or included : to fulfill all requirements or necessities
The well rounded menu covers all the bases—pork or duck breast and always a grilled chicken with complementary sauces and relishes … Caroline Bates
In other words, we need to cover every base. Too often, something is remembered at the last minute and we find ourselves waiting for the stores to open on sale day so we can purchase a much-needed item. Sue Story
In your e-mail, let the company know that, for their convenience, you're e-mailing the resume and letter, but that the original documents will arrive by postal service. This way you've got all your bases covered. Peter Post
off base
1
: wrong, mistaken
Estimates were way off base.
2
: unawares
caught off base by the charges
touch all the bases or less commonly touch every base
1
: to mention every subject that needs to be considered
a speech that touches all the bases
2
: to do or include everything that needs to be done or included : to fulfill all requirements or necessities
need to touch all the bases when applying for a mortgage
The owner of the Utah Stars is in Salt Lake City, working 24 hours a day in an effort to touch every base to keep his club in Utah's capital city. Dan Pattison

Synonyms

Noun

Verb

Adjective (1)

Choose the Right Synonym for base

base, low, vile mean deserving of contempt because of the absence of higher values.

base stresses the ignoble and may suggest cruelty, treachery, greed, or grossness.

base motives

low may connote crafty cunning, vulgarity, or immorality and regularly implies an outraging of one's sense of decency or propriety.

refused to listen to such low talk

vile, the strongest of these words, tends to suggest disgusting depravity or filth.

a vile remark

Example Sentences

Noun their base obedience to every unprincipled action ordered by their leader the army's base of attack was kept top secret until the battle began Verb They are going to base their new company in Seattle. The company has based itself in London. Our tour group based itself in a hotel in the heart of the city. Adjective (1) Iron is a base metal. a base and sneaky act that is a clear violation of international law See More
Recent Examples on the Web
Noun
The Defense Department is moving ahead with a Donald Trump-era project, building a third courtroom at Guantanamo Bay at a cost of $4 million, even though no additional trials are expected at the naval base. Jess Bravin, WSJ, 17 Sep. 2022 Giménez hustled down the line to reach base on Gordon’s miscue and went to third on pinch-hitter Miller’s single to right. Joe Noga, cleveland, 16 Sep. 2022 And while Austin Hays and Jorge Mateo reached base in the eighth, Baltimore didn’t capitalize. Henderson found a way to momentarily quell the noise inside Rogers Centre with two outs in the ninth inning, hitting a solo homer of his own. Andy Kostka, Baltimore Sun, 16 Sep. 2022 The new Sentosa is likely to be Palau Brani, a trapezoidal land mass and former Navy base between Singapore and Sentosa. Lilit Marcus, CNN, 16 Sep. 2022 As for the white, French signature detail, her manicurist made sure to deeply follow the edge of her nail shape down to her fingertips, framing that V-shaped base. Chelsea Avila, Allure, 16 Sep. 2022 The base, officials noted, has previously housed and cared for displaced individuals, including Louisiana residents affected by Hurricane Katrina in 2005. Samantha J. Gross, BostonGlobe.com, 16 Sep. 2022 Three straight Pittsburgh Pirates hitters reached base in those six pitches through two singles and a three-run homer. The Enquirer, 13 Sep. 2022 The first three batters of the game reached base against Young before Hunter Renfroe's grounder was booted by third baseman Evan Longoria, leading to two runs. Jr Radcliffe, Journal Sentinel, 8 Sep. 2022
Verb
Jonker instructed the jury to base its decision only on facts involving Fox and Croft. Tresa Baldas, Detroit Free Press, 19 Aug. 2022 Deep-lake basing is an interesting idea, partially recycled from a Cold War plot to base missiles in the Great Lakes. Kyle Mizokami, Popular Mechanics, 15 July 2022 Muzikir’s public defender encouraged the judge to base his ruling on Muzikir’s nearly spotless prison record. Keith L. Alexander, Washington Post, 19 June 2022 There’s a reason that Varsho didn’t have anyone to base his transition off. Theo Mackie, The Arizona Republic, 29 May 2022 Pairing with training partners who know how to base well, or raise her up, is also paramount. Matt Wake | Mwake@al.com, al, 5 May 2022 To help narrow down the options, here are seven tips to base your selection of a competent vendor for software consulting services. Thanh Pham, Forbes, 15 Mar. 2022 In addition to base Xbox One hardware exceeding WoW's minimum specs, Microsoft has had full keyboard-and-mouse support enabled for Xbox consoles for years, making the ecosystem a not-so-terrible fit for the popular MMO. Sam Machkovech, Ars Technica, 19 Jan. 2022 Weeks after our arrival the previous year, Soviet attempts to base nuclear-capable missiles in Cuba had brought the world too close to nuclear war. Peter Bridges, The Christian Science Monitor, 10 Jan. 2022
Adjective
Flores leads the Giants in games, runs, doubles, RBIs, hits and extra-base hits and is second in homers. John Shea John Shea, San Francisco Chronicle, 4 Sep. 2022 Friedl, known for his speed and defense, is 13-for-30 with six extra-base hits since rejoining the Reds a couple of weeks ago. The Enquirer, 28 Aug. 2022 José Ramírez led Cleveland’s offense Saturday by collecting his 16th game with multiple extra-base hits. Joe Noga, cleveland, 28 Aug. 2022 The starting price is a very reasonable $41,769, but only fleet customers can spec the larger battery pack on the base trim level, so the you-and-me price for a big-battery truck leaps to $74,269. Dave Vanderwerp, Car and Driver, 1 July 2022 Officials, residents, scientists, and companies all contributed to the Mumbai Climate Action Plan, which aims to cut emissions by 30% by 2030 and 44% by 2040, from a base level of 23.42 million metric tons of carbon dioxide in 2019. Erika Page, The Christian Science Monitor, 2 May 2022 Fraud charges such as Ms. Holmes’s begin with a base offense level of seven. Christopher Weaver, WSJ, 5 Jan. 2022 All tequilas offer a base level of roasty vegetal notes, but blancos give a bright, sparkly sheen to cocktails, whereas reposados and anjeos add a layer of warmth and spice. John Debary, Bon Appétit, 4 June 2021 PMIs are diffusion indexes measuring month over month activity with a base level of 50. Brendan Ahern, Forbes, 1 Mar. 2021 See More

Word History

Etymology

Noun

Middle English, from Anglo-French, from Latin basis, from Greek, step, base, from bainein to go — more at come

Verb

verbal derivative of base entry 1

Adjective (1)

Middle English bas, from Anglo-French, from Late Latin bassus fat, short, low

First Known Use

Noun

14th century, in the meaning defined at sense 1c(1)

Verb

1587, in the meaning defined at sense 2

Adjective (1)

14th century, in the meaning defined at sense 4

Adjective (2)

1734, in the meaning defined at sense 1

Time Traveler
The first known use of base was in the 14th century

Phrases Containing base

See More
See More
BNC: 514 COCA: 536
base

noun¹

 1lowest part最底部ADJECTIVE | VERB + BASE ADJECTIVE➤firm, solid, strong堅固的地基；牢固的基座➤circular, flat, rounded, square環形的／扁平的／圓形的／正方形的底座➤concrete, granite, steel, etc.混凝土、花崗岩、鋼鐵等基座VERB + BASE➤have有底座◇The statue has a solid concrete base.這座雕像有個堅固的混凝土底座。
base

noun²

 2original idea/situation思想或狀況的根源ADJECTIVE | VERB + BASE | PREPOSITION ADJECTIVE➤firm, secure, solid, sound, strong堅實的基礎；牢固的根基▸➤economic, evidence, ideological, scientific經濟／證據／思想／科學基礎◇His arguments have a sound economic base.他的論點有充分的經濟依據。VERB + BASE➤form, have構成基礎；有依據▸➤establish, give sb, provide (sb with)建立基礎；（給某人）打下基礎◇These policies give us a solid base for winning the next election.這些政策為我們在下次選舉中獲勝打下了堅實的基礎。➤use sth as把⋯作為依據PREPOSITION➤base for⋯的基礎◇He used the notes as a base for his lecture.他用這些筆記作為授課的底子。
base

noun³

 3of support/income/power支持；收入；力量ADJECTIVE | VERB + BASE | BASE + VERB ADJECTIVE➤solid, sound堅實的基礎▸➤broad, narrow廣泛的／狹窄的基礎◇These policies have a broad base of support.這些政策得到廣泛支持。➤power支持源泉◇a politician with a rural power base在農村有着大量支持者的從政者➤democratic民主基礎▸➤asset, commercial, economic, financial, industrial, manufacturing, political, resource, revenue, tax資產／商業／經濟／財政／工業／製造業／政治／資源／財政收入／稅收基礎◇The country has a sound commercial base.這個國家的商業基礎穩固。➤client, customer, subscriber, user客戶基礎；用戶基礎VERB + BASE➤create, form, have, provide創造／形成／擁有／提供基礎▸➤broaden, develop, expand, improve, increase擴大基礎；發展基礎◇The company is trying to expand its customer base.公司正努力擴大自身的客戶基數。➤maintain保持基礎BASE + VERB➤grow基礎擴大▸➤shrink基礎縮小
base

noun⁴

 4main place主要地點ADJECTIVE | VERB + BASE | BASE + NOUN | PREPOSITION ADJECTIVE➤excellent, ideal, perfect極佳的／理想的／完美的基地VERB + BASE➤have有總部◇The company has its base in New York.這家公司的總部設在紐約。➤establish, set up設立基地；建立根基◇The company has set up its new base in the north.這家公司在北方設立了新總部。BASE + NOUN➤camp大本營PREPOSITION➤base for⋯的基地◇an ideal base for mountain expeditions登山探險的理想基地
base

noun⁵

 5for army, navy, etc.陸軍；海軍ADJECTIVE | VERB + BASE | PREPOSITION ADJECTIVE➤foreign外國軍事基地◇Demonstrators demanded the removal of foreign bases.示威者要求撤除外國軍事基地。➤air, air-force, military, missile, naval空軍基地；軍事基地；導彈基地；海軍基地VERB + BASE➤have有基地▸➤build, establish建立基地◇The Americans established a naval base on the island in the 1960s.20 世紀 60 年代美國人在該島建了一個海軍基地。➤attack襲擊軍事基地➤destroy破壞軍事基地➤defend保衞軍事基地➤occupy佔領軍事基地PREPOSITION➤at a/the base在基地◇equipment kept at the base在基地保存的設備➤on a/the base在基地◇people living on the air force base住在空軍基地的人員➤to (the) base到基地◇The planes have all returned to base.飛機全部返回了基地。
base

verb

 ●base sth on/upon sthADVERB➤closely, firmly嚴密地／堅定地以⋯為基礎▸➤broadly, loosely, partly廣泛／大致／部份以⋯為基礎◇The novels are all loosely based on the author's life.所有這些小說都大致以作者的生活經歷為素材。➤entirely, largely, mainly, mostly, primarily完全／大部份／主要／多數／首先以⋯為基礎◇Their research was based largely on anecdotal evidence.他們的研究主要以傳聞為基礎。➤exclusively, purely, solely完全／純粹／僅僅以⋯為基礎

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