delta

nounverbcommon in dialogue

//ˈdɛltə//
/[ˈdɛɫtə]/

The fourth letter of the modern Greek alphabet Δ, δ.

noun

1
The fourth letter of the modern Greek alphabet Δ, δ.
2
A landform at the mouth of a river where it empties into a body of water.
Nile Delta
3
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)
4
The rate of change in an option value with respect to the underlying asset's price.
5
A value in delta notation indicating the relative abundances of isotopes.
6
The set of differences between two versions of a file.
When you update the file, the system will only save the deltas.
7
informalA small but noticeable effect. Compare epsilon.
This will slow the main code path down, but only by delta.
8
The angle subtended at the center of a circular arc.
9
A type of cargo bike that has one wheel in front and two in back.
10
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
11
A military unit, nominally headed by a colonel, equivalent to a USAF operations wing, or an army regiment.
12
a star that is usually the fourth brightest of a constellation.
13
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)
14
Variant of Delta from the NATO/ICAO Phonetic AlphabetAlternative letter-case form of Delta from the NATO/ICAO Phonetic Alphabet.
15
Variant of delta variantEllipsis of delta variant (variant of the SARS-CoV-2 virus).

Etymology

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

verb

1
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.
2
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.

Forms

plural: deltas
past tense: deltaed
past participle: deltaed
present participle: deltaing
third person singular: deltas

Della · A female given name originating as a coinage.delphine · Of, pertaining to, or characteristic of dolphins.Delphine · A female given name from French, Latin, or Ancient Greek.

delta · The fourth letter of the modern Greek alphabet Δ, δ.

Delta · A state of Nigeria in the South South geopolitical zone.…delusion · An adamant belief in a falsehood despite incontestable…delusional · Suffering from delusions; having false or faulty beliefs.

The neighbouring pages — Alphabetical order follows the rules of the language, not byte values: an accent decides only between two otherwise identical words, and Spanish files Ñ as a letter of its own.