the fourth letter of the Greek alphabet (Δ, δ), transliterated as ‘d’
a code word representing the letter D, used in radio communication
a difference between two things or values
there's a delta between perception and reality
as long as the price delta is not too great, consumers can be sold on specs and future-proofing
a triangular tract of sediment deposited at the mouth of a river, typically where it diverges into several outlets
the Nile delta
a huge delta system developed