delta
中文来自 ECDICT
- n.
- 三角洲，希腊字母的第四个字
演变路径（由近及远）
词源说明
From Ancient Greek δέλτα (délta), borrowed from a Phoenician word for "door", ultimately from Proto-Semitic *dalt-. Doublet of dalet.
(river): from the triangular shape of the majuscule Greek letter delta Δ
(USSF): from the delta wing, symbol of the USSF, a triangular wing, shaped like the majuscule Greek letter delta Δ
释义（英文）
名词 Noun
- 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.
- (international standards) Alternative letter-case form of Delta from the NATO/ICAO Phonetic Alphabet.
- (mathematics, physics, engineering) The symbol Δ; A change in a quantity, likely from "d" for "difference".
- (finance) The rate of change in an option