Meaning of DELTA in English

~ 1

■ noun

1》 the fourth letter of the Greek alphabet ( Δ , δ ), transliterated as ‘d’.

↘[as modifier ] denoting the fourth in a series of items or categories.

↘ Brit. a fourth-class mark given for a piece of work.

2》 a code word representing the letter D, used in radio communication.

■ symbol Mathematics variation of a variable or quantity.


Gk, from Phoenician daleth .


~ 2

■ noun a triangular tract of sediment deposited at the mouth of a river, typically where it diverges into several outlets.


~ic adjective


C16: orig. the Delta (of the River Nile), from the shape of the Gk letter (see ~ 1 ).

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.