🔍 牛津詞典
🔍 朗文詞典
🔍 劍橋詞典
🔍 柯林斯詞典
🔍 麥美倫詞典
🔍 韋氏詞典 🎯

檢索以下詞典：
(Mr. Ng 不推薦使用 Google 翻譯！)
最近搜尋：
TOEFL BNC: 7242 COCA: 10451

See also: Delta, The

delta

1 of 4

noun

del·​ta ˈdel-tə How to pronounce delta (audio)
plural deltas
1
: the 4th letter of the Greek alphabet see Alphabet Table
2
: something shaped like a capital Greek delta
especially, geology : the alluvial deposit at the mouth of a river
the Mississippi Delta
3
mathematics : an increment of a variable
—symbol Δ
4
: delta wave
During deep sleep, the brain operates in delta wave frequency. But it's difficult to go from beta to theta then delta without first switching down to a relaxed alpha state. Daily Mail (London)
5
or less commonly Delta : delta variant
As SARS-CoV-2 continues to spread among humans, natural selection and adaptation will result in more variants that could plausibly be more transmissible than delta. Suresh V. Kuchipudi
deltaic
del-ˈtā-ik How to pronounce delta (audio)
adjective

delta

2 of 4

adjective (1)

chemistry
: fourth in position in the structure of an organic (see organic entry 1 sense 1b(2)) molecule from a particular group or atom
—symbol δ

Delta

3 of 4

communications code word

—used as a code word for the letter d

Delta

4 of 4

adjective (2)

: of, relating to, or characteristic of the The Delta region of Mississippi

Example Sentences

Recent Examples on the Web
Noun
Yolo Bypass is supposed to help an endangered fish, the delta smelt — but critics see it as a canard meant to benefit Westlands Water District, an agricultural powerhouse. Sammy Rothstaff Writer, Los Angeles Times, 15 Sep. 2022 Up next for Aperta is the delta prototype, which will basically be the production version of the vehicle, according to Electrek. Bryan Hood, Robb Report, 12 Sep. 2022 Farther downlake, the San Juan River, a major tributary that joins the reservoir, has pushed its delta closer to Lake Powell’s main channel. AZCentral.com, 6 Sep. 2022 In fall 2021, the dangerous delta variant dominated, to be replaced later that year by omicron, which caused the highest caseload and number of deaths of the pandemic. Karen Weintraub, USA TODAY, 1 Sep. 2022 Niger delta cuisine is evident in the old traditional palm fruit dishes such as owo and banga soups and banga rice. Uwagbale Edward-ekpu, Quartz, 2 Sep. 2022 Both 2019 and 2021′s Labor Day weekends saw comparatively low hotel occupancy, due to Hurricane Dorian in 2019 and the delta COVID-19 variant last year, Matej said. Katie Rice, Orlando Sentinel, 1 Sep. 2022 Additionally, the weekend is down more than 16 percent from the same frame in 2021, when the COVID-19 delta variant was much more of an issue in terms of moviegoing. Pamela Mcclintock, The Hollywood Reporter, 27 Aug. 2022 The team’s signature aerial maneuvers include diamond and delta formations. Kori Rumore, Chicago Tribune, 18 Aug. 2022 See More

Word History

Etymology

Noun and Adjective (1)

Middle English deltha, from Greek delta, of Semitic origin; akin to Hebrew dāleth daleth

First Known Use

Noun

12th century, in the meaning defined at sense 1

Adjective (1)

circa 1929, in the meaning defined above

Communications Code Word

1952, in the meaning defined above

Adjective (2)

1859, in the meaning defined above

Time Traveler
The first known use of delta was in the 12th century

Phrases Containing delta

See More

👨🏻‍🏫 Mr. Ng 韋氏詞典 📚 – mw.mister5️⃣.net
切換為繁體中文
Site Uptime