Learn how to say Delta correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word delta:
1the fourth letter of the Greek alphabet (Δ, δ), transliterated as ‘d’.
British a fourth-class mark given for an essay, examination paper, or other piece of work.
[as modifier] the fourth in a series of items, categories, etc.:
(Delta) [followed by Latin genitive] Astronomy the fourth (usually fourth-brightest) star in a constellation:
2a code word representing the letter D, used in radio communication.
3 (also delta connection) a triangular arrangement of electrical three-phase windings.
(δ) Mathematics variation of a variable or function.
(Δ) Mathematics a finite increment.
(δ) Astronomy declination.
Greek, from Phoenician daleth