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TOEFL IELTS BNC: 4259 COCA: 4021

seal

1 seal /ˈsiːl/ verb
seals; sealed; sealing
1 seal
/ˈsiːl/
verb
seals; sealed; sealing
Learner's definition of SEAL
[+ object] : to close (something) tightly so that air, liquid, etc., cannot get in or out密封
often + up
[+ object] : to close (an envelope, bag, etc.) by sticking or pressing two of its parts together封上(信封);系上(袋口)
[no object] : to become closed tightly密闭;关紧
[+ object] : to cover the surface of (something) with a substance that will protect it给…涂上保护层
[+ object] : to make (something) definite and final确定;锁定;使成定局
[+ object] : to prevent someone from going into or through (an area or place)封锁;封闭;关闭

my lips are sealed

see lip

seal in

[phrasal verb]
seal (something) in or seal in (something)
: to prevent (something that is in something else) from getting out or escaping把…封闭在内

seal off

[phrasal verb]
seal off (something) or seal (something) off
: to prevent people from entering or leaving (an area or place)封锁

— sealed

adjective
2 seal /ˈsiːl/ noun
plural seals
2 seal
/ˈsiːl/
noun
plural seals
Learner's definition of SEAL
[count]
: an official mark that is stamped on paper or on a small piece of wax to show that something (such as a document) is genuine and has been officially approved印章;图章
: a small piece of stamped wax or a small sticker that is put on a letter or envelope to keep it closed or to show that it has not been opened封蜡;封条
: a device with a raised design that can be pressed into something (such as paper or wax) to make a seal封蜡模(印)
: a piece of material (such as rubber) that is used on the lid of a container to keep air, water, etc., out of the container or to show the container has not been opened密封垫;密封圈
: the state of being closed tightly so that no air, water, etc., can pass through密封;密闭

seal of approval

: an action or statement that shows approval or official acceptance批准;接受

set the seal on

British, formal
: to make (something) final or definite确定;锁定;使成定局

under seal

law, formal
: having an official seal that prevents the public from seeing or reading it密封;加盖印信
compare 3seal
3 seal /ˈsiːl/ noun
plural seals
3 seal
/ˈsiːl/
noun
plural seals
Learner's definition of SEAL
[count] : a large animal that lives in the sea near coasts, has flippers, and eats fish海豹
[noncount] : the skin of a seal usually used for fur海豹皮
compare 2seal

SEAL

SEAL /ˈsiːl/ noun
plural SEALs
SEAL
/ˈsiːl/
noun
plural SEALs
Learner's definition of SEAL
[count] US
: a soldier in the U.S. Navy who has special training and belongs to a small group that performs dangerous missions(美国海军)海豹特种部队士兵
TOEFL IELTS BNC: 4259 COCA: 4021

seal

1 of 5

noun (1)

plural seals also seal
1
: any of numerous carnivorous marine mammals (families Phocidae and Otariidae) that live chiefly in cold regions and have limbs modified into webbed flippers adapted primarily to swimming
especially : a fur seal or hair seal as opposed to a sea lion
2
a
: the pelt of a fur seal
b
: leather made from the skin of a seal
3
: a dark brown

seal

2 of 5

verb (1)

sealed; sealing; seals

seal

3 of 5

noun (2)

1
a
: something that confirms, ratifies, or makes secure : guarantee, assurance
b(1)
: a device with a cut or raised emblem, symbol, or word used especially to certify a signature or authenticate a document
(2)
: a medallion or ring face bearing such a device incised so that it can be impressed on wax or moist clay
also : a piece of wax or a wafer bearing such an impression
c
: an impression, device, or mark given the effect of a common-law seal by statute law or by American local custom recognized by judicial decision
d
: a usually ornamental adhesive stamp that may be used to close a letter or package
especially : one given in a fund-raising campaign
2
a
: something that secures (such as a wax seal on a document)
b
: a closure that must be broken to be opened and that thus reveals tampering
c(1)
: a tight and perfect closure (as against the passage of gas or water)
(2)
: a device to prevent the passage or return of gas or air into a pipe or container
3
: a seal that is a symbol or mark of office

seal

4 of 5

verb (2)

sealed; sealing; seals

transitive verb

1
a
: to confirm or make secure by or as if by a seal
seal the deal
b
: to solemnize (something, such as a marriage) for eternity by a Mormon rite
2
a
: to set or affix an authenticating seal to
b
: to mark with a stamp or seal usually as an evidence of standard exactness, legal size, weight, or capacity, or merchantable quality
3
a
: to fasten with or as if with a seal to prevent tampering
b
: to close or make secure against access, leakage, or passage by a fastening or coating
c
: to fix in position or close breaks in with a filling (as of plaster)
4
: to determine irrevocably or indisputably
that answer sealed our fate

SEAL

5 of 5

abbreviation

sea, air, land (team)
Phrases
under seal
: with an authenticating seal affixed

Word History

Etymology

Noun (1)

Middle English sele, from Old English seolh; akin to Old High German selah seal

Noun (2)

Middle English sele, seel, from Anglo-French seal, sel, from Latin sigillum seal, from diminutive of signum sign, seal — more at sign

First Known Use

Noun (1)

before the 12th century, in the meaning defined at sense 1

Verb (1)

1828, in the meaning defined above

Noun (2)

13th century, in the meaning defined at sense 1a

Verb (2)

14th century, in the meaning defined at sense 1a

Time Traveler
The first known use of seal was before the 12th century
TOEFL IELTS BNC: 4259 COCA: 4021
seal

noun¹

1animal動物ADJECTIVE | VERB + SEAL | SEAL + VERB | SEAL + NOUN ADJECTIVEbaby小海豹VERB + SEALhunt捕獵海豹club用棍棒打海豹The ad criticized hunters for clubbing baby seals.這則廣告譴責用棍棒擊殺小海豹的捕獵者。cull (especially BrE) 選擇性捕殺海豹Environmentalists claim there is no reason to cull seals.環保主義者稱沒有理由對海豹進行選擇性捕殺。SEAL + VERBbask海豹曬太陽SEAL + NOUNpup小海豹colony海豹群cull (especially BrE) 對海豹的選擇性捕殺hunt獵殺海豹
seal

noun²

2for a document文件ADJECTIVE | VERB + SEAL | PHRASES ADJECTIVEwax蠟封an official-looking letter with a wax seal帶有蠟封、看上去正式的信件presidential, privy, royal總統/私人/王室印章VERB + SEALbreak開封條He broke the seal and opened the envelope.他撕下封條,拆開了信封。PHRASESa/the/sb's seal of approval正式批准Her report was given the seal of approval by senior management.她的報告得到了高級管理層的正式批准。
seal

verb

ADVERB | PREPOSITION ADVERBcarefully, properly, tightly, well仔細密封;妥善密封;牢牢封住;封嚴實The containers must be carefully sealed so that no air can get in.這些容器必須仔細密封,以防空氣進入。completely完全密封The unit is completely sealed.這個裝置處於完全密封狀態。virtually實際上密封effectively有效地密封hermetically真空密封a hermetically sealed container真空密封的容器away, in, off, up封閉;封閉在裏面;封鎖;封上Police sealed off the area.警察封鎖了該地區。PREPOSITIONfrom使與⋯隔絕The nuclear plant would be effectively sealed off from the world.該核電廠將與外界完全隔離開。with用⋯密封He sealed the bag tightly with tape.他用膠帶將袋子牢牢封住。

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