English Dictionary

delta

IPA（発音記号）

/ˈdɛltə/

名詞

別表記 くだけた表現 限定用法 頻度副詞 固有名詞 アメリカ英語 略語

The fourth letter of the modern Greek alphabet Δ, δ. / A landform at the mouth of a river where it empties into a body of water.

日本語の意味

ギリシャ文字の第4番目の文字で、デルタと呼ばれる。 / 河口に形成される三角州、すなわち河川が海や湖に流れ込む際に堆積した土地形状。

In the lecture, she circled delta on the board to highlight the fourth letter of the Greek alphabet.

講義で、彼女は黒板のギリシャ文字の4番目の文字を丸で囲んで強調した。

意味（1）

The fourth letter of the modern Greek alphabet Δ, δ.

意味（2）

A landform at the mouth of a river where it empties into a body of water.

Nile Delta

意味（3）

(international standards) Alternative letter-case form of Delta from the NATO/ICAO Phonetic Alphabet.

意味（4）

(mathematics) The symbol Δ.

意味（5）

(computing, informal) A small but noticeable effect. Compare epsilon.

This will slow the main code path down, but only by delta.

意味（6）

(computing) The set of differences between two versions of a file.

When you update the file, the system will only save the deltas.

意味（7）

(physics, engineering) A change in a quantity, likely from "d" for "difference".

ΔV - delta vee(change in velocity, used in rocketry and orbital mechanics)

意味（8）

(surveying) The angle subtended at the center of a circular arc.

意味（9）

A type of cargo bike that has one wheel in front and two in back.

意味（10）

(electrical, often attributive) The closed figure produced by connecting three coils or circuits successively, end for end, especially in a three-phase system.

delta winding; delta connection; delta current

意味（11）

(finance) The rate of change in an option value with respect to the underlying asset's price.

意味（12）

(chemistry) A value in delta notation indicating the relative abundances of isotopes.

意味（13）

(US, military, U.S. Space Force) A military unit, nominally headed by a colonel, equivalent to a USAF operations wing, or an army regiment.

意味（14）

(astronomy) a star that is usually the fourth brightest of a constellation.

意味（15）

(physics) one of four baryons consisting of up and down quarks with a combined spin of 3/2: Δ⁺⁺ (uuu), Δ⁺ (uud), Δ⁰ (udd), or Δ⁻ (ddd)

意味（16）

(medicine) Short for delta variant. (variant of the SARS-CoV-2 virus)

deltas （ plural ）