delta

English · Español · Français · Deutsch · Italiano · Português · Kiswahili · Thesaurus

AI In plain words

Writing a short explanation…

Written by a house AI from the entry below, in your language. The entry itself is the source.

delta^¹

/ˈdɛltə/
[ˈdɛɫtə]

Rhymes with -ɛltə

Where it comes from

From Ancient Greek δέλτα (délta), borrowed from a Phoenician word for "door", ultimately from Proto-Semitic *dalt-. Doublet of dalet.

* (river): from the triangular shape of the majuscule Greek letter delta Δ

* (USSF): from the delta wing, symbol of the USSF, a triangular wing, shaped like the majuscule Greek letter delta Δ

noun deltas

The fourth letter of the modern Greek alphabet Δ, δ.
A landform at the mouth of a river where it empties into a body of water. Nile Delta
Alternative letter-case form of Delta from the NATO/ICAO Phonetic Alphabet
The symbol Δ; A change in a quantity, likely from "d" for "difference". ΔV - "delta vee"(change in velocity, used in rocketry and orbital mechanics)
The rate of change in an option value with respect to the underlying asset's price.
A value in delta notation indicating the relative abundances of isotopes.
The set of differences between two versions of a file. When you update the file, the system will only save the deltas.
informal A small but noticeable effect. Compare epsilon. This will slow the main code path down, but only by delta.
The angle subtended at the center of a circular arc.
A type of cargo bike that has one wheel in front and two in back.
attributive, often The closed figure produced by connecting three coils or circuits successively, end for end, especially in a three-phase system. delta winding; delta connection; delta current
Space Force, US A military unit, nominally headed by a colonel, equivalent to a USAF operations wing, or an army regiment.
Similar: garrison
a star that is usually the fourth brightest of a constellation.
one of four baryons consisting of up and down quarks with a combined spin of 3/2: Δ⁺⁺ (uuu), Δ⁺ (uud), Δ⁰ (udd), or Δ⁻ (ddd)
abbreviation, ellipsis Ellipsis of delta variant (variant of the SARS-CoV-2 virus).

verb deltas · deltaing · deltaed

To calculate the differences between the characters in an enciphered text and the characters a fixed number of positions previous. Turingery worked on deltaed key to produce the deltaed contribution of the chi-wheels. Turing's discovery that delta-ing would reveal information otherwise hidden was essential to the developments that followed.
To compare two versions of the same file in order to determine where they differ (where a programmer has made edits). The primary function of this command is to delta the product version file (if it has been retrieved for edit). However, prior to deltaing the product version file, the work source tree is searched to verify that no other source files are still waiting to be deltaed.

Delta^²

/ˈdɛltə/

Rhymes with -ɛltə

proper noun

A state of Nigeria in the South South geopolitical zone. Capital: Asaba. Largest city: Warri.
A municipality in Central Macedonia, Greece.
A municipality of Minas Gerais, Brazil.
A municipality of British Columbia, Canada. The xʷəxʷilməxʷ (Indigenous Peoples) recognized how the meeting of the təməxʷ (land), stal̓əw̓ (river), and k̓ʷaƛ̓k̓ʷa (sea) could provide an abundance of access to seasonal resources, as well as provide a more permanent residence for the scəw̓aθən məsteyəxʷ (Tsawwassen Peoples). The features of thi
A village in Ontario, Canada.
A census-designated place and unincorporated community in Clay County, Alabama.
A city and home rule municipality, the county seat of Delta County, Colorado.
An unincorporated community in Saline County, Illinois.
A city in Keokuk County, Iowa.
An unincorporated community in Wayne County, Kentucky.
A village in Madison Parish, Louisiana.
A city in Cape Girardeau County, Missouri.
An unincorporated community in Stokes County, North Carolina.
A village in Fulton County, Ohio.
A borough in York County, Pennsylvania.
A city in Millard County, Utah.
A town and unincorporated community in Bayfield County, Wisconsin.
A river in Alaska.

noun

The Delta variant of COVID-19. Delta is moderately resistant to vaccines, particularly in people who have received just a single dose.

DELTA^³

noun DELTAs

abbreviation, acronym Acronym of Diploma in Teaching English to Speakers of Other Languages, an advanced qualification to teach English, higher than the CELTA, accredited by the University of Cambridge.

Thesaurus

Closest in meaning: triangular, triangle, part, region, daemon, share, involvement, participation, difference, involved, gap, tap, mud, thc, prd, tetrahydrocannabinol

Translations

Every language

noun fourth letter of modern Greek alphabet

Español	delta
한국어	델타 delta
日本語	デルタ deruta
中文	德爾塔 /德尔塔 dé'ěrtǎ
हिन्दी	डेल्टा ḍelṭā
Português	delta
Français	delta
Deutsch	Delta
Ελληνικά	δέλτα délta
Română	delta
Русский	де́льта dɛ́lʹta
العربية	دِلْتَا diltā, دِلْتَا deltā
עברית	דֶּלְתָּא délta

noun landform at the mouth of a river

Español	delta
한국어	삼각주 samgakju
日本語	三角州 sankakusu
中文	三角洲 sānjiǎozhōu
हिन्दी	मुखत्रिकोण mukhatrikoṇ, त्रिभुज tribhuj, तिकोन tikon
Português	delta
Français	delta
Deutsch	Delta
Ελληνικά	δέλτα délta
Română	deltă
Русский	де́льта dɛ́lʹta
Tiếng Việt	châu thổ
العربية	دِلْتَا diltā
עברית	דלתה delta

noun mathematical symbol Δ

हिन्दी	डेल्टा ḍelṭā
Français	delta
Deutsch	Delta
Ελληνικά	δέλτα délta
Română	delta
Русский	де́льта dɛ́lʹta

noun computing: set of differences between two versions of a file

Русский	дельта delʹta, разница raznica, различия različija

noun computing: small but noticeable effect

Русский	дельта delʹta

Talk about this word

Cite this

MLA

"delta." Wiktionary, via Micwyn, micwyn.com/word/delta. Accessed 6 Nov. 2026.

APA

delta. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/delta

Chicago

"delta." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/delta.

BibTeX

@misc{delta_2026,
  title = {delta},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/delta},
  urldate = {2026-11-06}
}