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delta

[ del-tuh ]
/ ˈdɛl tə /
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noun
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Origin of delta

First recorded in 1150–1200; Middle English delta, deltha, from Latin delta, from Greek délta; akin to Hebrew dāleth

WORDS THAT MAY BE CONFUSED WITH delta

delta , estuary

Other definitions for delta (2 of 2)

Delta
[ del-tuh ]
/ ˈdɛl tə /

noun Military.
the NATO name for a class of nuclear-powered submarines armed with multiple-warhead ballistic missiles, including those designed to strike military and industrial installations: first produced for the Soviet Navy in the 1970s; in service with the Russian Navy since 1992.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use delta in a sentence

British Dictionary definitions for delta (1 of 3)

delta
/ (ˈdɛltə) /

noun
the fourth letter in the Greek alphabet (Δ, δ), a consonant transliterated as d
an object resembling a capital delta in shape
(capital when part of name) the flat alluvial area at the mouth of some rivers where the mainstream splits up into several distributariesthe Mississippi Delta
maths a finite increment in a variable

Derived forms of delta

deltaic (dɛlˈteɪɪk) or deltic, adjective

Word Origin for delta

C16: via Latin from Greek, of Semitic origin; compare Hebrew dāleth

British Dictionary definitions for delta (2 of 3)

Delta1
/ (ˈdɛltə) /

noun
(foll by the genitive case of a specified constellation) usually the fourth brightest star in a constellation
any of a group of US launch vehicles used to put unmanned satellites into orbit
communications a code word for the letter d

British Dictionary definitions for delta (3 of 3)

Delta2
/ (ˈdɛltə) /

noun
a state of Nigeria, on the Niger river delta on the Gulf of Guinea. Capital: Asaba. Pop: 4 098 391 (2006). Area: 17 698 sq km (6833 sq miles)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for delta

delta
[ dĕltə ]

A usually triangular mass of sediment, especially silt and sand, deposited at the mouth of a river. Deltas form when a river flows into a body of standing water, such as a sea or lake, and deposits large quantities of sediment. They are usually crossed by numerous streams and channels and have exposed as well as submerged areas.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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