delta - Wiktionary, the free dictionary (original) (raw)

From Wiktionary, the free dictionary

delta

  1. Alternative letter-case form of Delta of the ICAO/NATO radiotelephony alphabet.

Ancient Greek alphabet

← gamma → epsilon
Δ δ Ancient Greek: δέλτα
Wikipedia article on delta

Lena River delta (landform at the mouth of a river).

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

delta (plural deltas)

  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.
  3. (international standards) Alternative letter-case form of Delta from the NATO/ICAO Phonetic Alphabet.
  4. (mathematics, physics, engineering) 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)
  5. (finance) The rate of change in an option value with respect to the underlying asset's price.
  6. (chemistry) A value in delta notation indicating the relative abundances of isotopes.
  7. (computing) The set of differences between two versions of a file.
    When you update the file, the system will only save the deltas.
  8. (computing, informal) A small but noticeable effect. Compare epsilon.
    This will slow the main code path down, but only by delta.
  9. (surveying) The angle subtended at the center of a circular arc.
  10. A type of cargo bike that has one wheel in front and two in back.
  11. (electricity, often attributive) 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
  12. (US military, US Space Force) A military unit, nominally headed by a colonel, equivalent to a USAF operations wing, or an army regiment.
  13. (astronomy) a star that is usually the fourth brightest of a constellation.
  14. (physics) 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)
  15. (medicine) Ellipsis of delta variant (variant of the SARS-CoV-2 virus).

fourth letter of modern Greek alphabet

landform at the mouth of a river

mathematical symbol Δ

computing: small but noticeable effect

computing: set of differences between two versions of a file

surveying: angle at the center of a circular arc

Translations to be checked

delta (third-person singular simple present deltas, present participle deltaing, simple past and past participle deltaed)

  1. (cryptography) To calculate the differences between the characters in an enciphered text and the characters a fixed number of positions previous.
    • 2007, B. J. Copeland, “Tunny and Colossus: Breaking the Lorenz Schlüsselzusatz traffic”, in Karl de Leeuw, Jan Bergstra, editors, The History of Information Security: A Comprehensive Handbook, Amsterdam: Elsevier, →ISBN, page 458:
      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. (computing) To compare two versions of the same file in order to determine where they differ (where a programmer has made edits).
    • 1992, Israel Silverberg, Source File Management With SCCS, Englewood Cliffs, NJ: Prentice Hall, →ISBN, page 166:
      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.

From Ancient Greek δέλτα (délta).

delta f (plural deltes)

  1. delta (Greek letter)

delta m (plural deltes)

  1. delta (landform at the mouth of a river)

Borrowed from Ancient Greek δέλτα (délta).

delta f (plural deltes)

  1. delta; the Greek letter Δ (lowercase δ)
  2. (geography) a delta

Greek letter

Δδ Previous: gama
Next: epsilon

Borrowed from Ancient Greek δέλτα (délta), which is probably of Semitic origin.[1]

delta n (indeclinable)

  1. Delta (Greek letter Δ)
  2. (physics) kind of rays consisting of secondary electrons with enough energy to escape a significant distance away from the primary radiation beam and produce further ionization (delta ray)

delta (indeclinable)

  1. having the shape of the Greek letter Δ
    delta křídlo ― delta wing

Borrowed from Ancient Greek δέλτα (délta). Originally used for the delta of the Nile, because its forked shape resembled the Greek letter Δ. The word is probably of Semitic origin.[1]

delta f (relational adjective deltový)

  1. (geography) delta (forked mouth of a river)

  2. ↑ 1.0 1.1 Rejzek, Jiří (2015), “delta”, in Český etymologický slovník [Czech Etymological Dictionary] (in Czech), 3rd (revised and expanded) edition, Praha: LEDA, →ISBN, page 137

From Ancient Greek δέλτα (délta).

delta n (singular definite deltaet, plural indefinite deltaer)

  1. a river delta
  2. delta (the fourth letter of the Greek alphabet, Δ, δ.)

Ultimately from Ancient Greek δέλτα (délta). Doublet of dalet.

delta f (plural delta's, diminutive deltaatje n)

  1. the Greek letter delta
  2. a river delta, a network of one or more rivers and tributaries pouring out into a larger body of water
    Synonym: rivierdelta

Greek letter

Δδ Previous: gamma
Next: epsilon

From Ancient Greek δέλτα (délta).

delta

  1. delta (Greek letter)

From Ancient Greek δέλτα (délta).

delta m (plural **delta or deltas)

  1. delta (Greek letter)

delta m (plural deltas)

  1. delta (geographical feature)
    Hypernym: embouchure

From Ancient Greek δέλτα (délta).

delta m (plural deltas)

  1. delta (Greek letter)
  2. delta (landform at the mouth of a river)

From Ancient Greek δέλτα (délta).

delta (plural delták)

  1. delta (Greek letter)
  2. delta (landform at the mouth of a river)

delta f (genitive singular deltu, nominative plural deltur) or
delta n (genitive singular **delta, nominative plural deltu)

  1. delta (Greek letter)

From Ancient Greek δέλτα (délta).

delta

  1. delta,
    1. the fourth letter of the modern Greek alphabet Δ, δ
    2. (geography) a landform at the mouth of a river where it empties into a body of water

From Ancient Greek δέλτα (délta).

delta m (invariable)

  1. delta (all senses)

delta f (4th declension)

  1. delta (Greek letter)
  2. delta (landform at the mouth of a river)

From Ancient Greek δέλτα (délta).

delta m (definite singular deltaen, indefinite plural deltaer, definite plural deltaene)

  1. the Greek letter Δ, δ (delta)

delta n (definite singular deltaet, indefinite plural **delta or deltaer, definite plural deltaene)

  1. a river delta

From del (“part”) + ta (“take”); i.e. to take (a) part in something; to partake in something.

delta (imperative **delta, present tense deltar, passive deltas, simple past deltok, past participle deltatt, present participle deltakende)

  1. to participate; to partake

From del (“part”) + ta (“take”); i.e. to take (a) part in something.

delta (present tense deltek or deltar, past tense deltok, past participle delteke or deltatt, passive infinitive delteken, present participle deltakande, imperative **delta)

  1. to participate

From Ancient Greek δέλτα (délta).

delta m (definite singular deltaen, indefinite plural deltaer or deltaar, definite plural deltaene or deltaane)

  1. the Greek letter Δ, δ (delta)

A specialized use of delta (Etymology 2).

delta n (definite singular deltaet, indefinite plural **delta, definite plural deltaa)

  1. a river delta

Learned borrowing from Ancient Greek δέλτα (délta), from Phoenician 𐤃 (d /⁠dalet⁠/).

delta f

  1. delta (Greek letter Δ, δ)
  2. (mathematics, colloquial) discriminant
    Synonym: wyróżnik
  3. (geography) delta (landform at the mouth of a river)
  4. (aeronautics) delta wing

Borrowed from Ancient Greek δέλτα (délta).

delta m (plural deltas)

  1. delta (Greek letter)
  2. delta (landform at the mouth of a river)

Borrowed from Ancient Greek δέλτα (délta).

dȅlta f (Cyrillic spelling де̏лта)

  1. delta, the Greek letter Δ, δ

Borrowed from Ancient Greek δέλτα (délta).

delta f (plural deltas)

  1. Greek letter delta

delta m (plural deltas)

  1. (geography) a delta

Borrowed from English delta.

delta class IX (plural **delta class X)

  1. delta (landform at the mouth of a river)

From Ancient Greek δέλτα (délta).

delta n

  1. the Greek letter Δ, δ (delta)
  2. a river delta

From del (“part”) +‎ ta(ga) (“take”), i.e. to take part in something. Compare English partake.

delta (present deltar, preterite deltog, supine deltagit, imperative **delta)

  1. to participate, to take part
    delta i en demonstration
    participate in a demonstration (protest march)
    1. to attend
      Han deltog i mötet
      He attended (took part in) the meeting

Conjugation of delta (class 6 strong)

| | active | passive | | | | | ------------------ | --------------------------------------------------- | ------------------------------------------------------------------------------------------- | ---- | - | | infinitive | delta | — | | | | supine | deltagit | — | | | | imperative | delta | — | | | | _imper. plural_1 | deltan | — | | | | | present | past | present | past | | | indicative | deltar | deltog | — | — | | _ind. plural_1 | delta | deltogo | — | — | | _subjunctive_2 | delta | deltoge | — | — | | | | | | | | | present participle | deltagande | | | | | past participle | — | | | |