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View synonyms for delta

delta

1

[ del-tuh ]

noun

  1. the fourth letter of the Greek alphabet (Δ, δ).
  2. the consonant sound represented by this letter.
  3. the fourth in a series of items.
  4. anything triangular, like the Greek capital delta (Δ).
  5. Mathematics. an incremental change in a variable, as Δ or δ.
  6. a nearly flat plain of alluvial deposit between diverging branches of the mouth of a river, often, though not necessarily, triangular:

    the Nile delta.

  7. Also Delta. a word used in communications to represent the letter D.
  8. Delta, Astronomy. a star that is usually the fourth brightest of a constellation:

    The fourth brightest star in the Southern Cross is Delta Crucis.



Delta

2

[ del-tuh ]

noun

, Military.
  1. 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.

Delta

1

/ ˈdɛltə /

noun

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


Delta

2

/ ˈdɛltə /

noun

  1. 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)

delta

3

/ ˈdɛltə; dɛlˈteɪɪk /

noun

  1. the fourth letter in the Greek alphabet (Δ, δ), a consonant transliterated as d
  2. an object resembling a capital delta in shape
  3. capital when part of name the flat alluvial area at the mouth of some rivers where the mainstream splits up into several distributaries

    the Mississippi Delta

  4. maths a finite increment in a variable

delta

/ dĕl /

  1. 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.


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Derived Forms

  • deltaic, adjective

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Word History and Origins

Origin of delta1

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

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Word History and Origins

Origin of delta1

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

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Example Sentences

The rover filmed the ground coming closer and closer, getting glimpses of a river delta, craters, ripples and fractured terrain.

It is so overused that it no longer flows into its delta in the Gulf of California.

The rover may have to drive around those sand dunes to get to the delta formation.

The landing site, Jezero crater, is a former lake bed with an ancient delta where waters may have once deposited sediments that could preserve fossilized materials or other evidence of life.

Perseverance landed in Jezero Crater, which is an ancient river delta.

From Vox

When Tonie Tobias started at Delta in 1996 she was shy and closeted.

Delta was a sponsor of the HRC dinner here in Atlanta and I went and met her there.

Companies like Delta, Apple, and Nike flex their political muscle on behalf of gay rights.

I told them the story about how Delta helped her propose to me in the middle of the international terminal here at Delta.

It was because of Delta that I actually started helping out in the community, volunteering.

The character , as Westphal shows, is for , or delta with part of one side left out.

Agassiz represents the Fraser delta and Kamloops the southern interior district.

It ran into the lake about a quarter of a mile from our tent, forming a good-sized delta at its mouth.

It was in the fifth year of his reign that the Delta was attacked by a formidable combination of foes.

This part is called the Delta from its likeness to the Greek letter of that name, which is of a triangular form.

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del Sartodelta connection