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⇱ DD - WordReference.com Dictionary of English


DD

UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/ˌdiːˈdiː/


WordReference Random House Unabridged Dictionary of American English © 2026
DD, 
  1. dishonorable discharge.

dd, 
    1. Lawtoday's date.
    2. Meteorologydegree-day.
    3. Businessdelayed delivery.
    4. delivered.
    5. Businessdemand draft.
    6. Nautical, Naval Termsdouble deck.
    7. Nautical, Naval Terms[Shipbuilding.]dry dock.

dd., 
  1. Businessdelivered.

D/D, [Com.]
  1. days after date.

D.D., 
    1. Businessdemand draft.
    2. Doctor of Divinity.

Collins Concise English Dictionary © HarperCollins Publishers::
DD abbreviation for
  • dear or darling daughter: often used facetiously in social media
    1. Also: dd direct debit
    2. Doctor of Divinity
    WordReference Random House Learner's Dictionary of American English © 2026
    D, d /di/USA pronunciation   n. [countable], pl. Ds or D's, ds or d's. 
    1. Linguisticsthe fourth letter of the English alphabet, a consonant.
    2. Education[sometimes: d] (in some grading systems) a grade or mark indicating poor or barely acceptable quality.

    d',2  [Pron. Spelling.]
    1. do (esp. before you):How d'you like them?

    'd, 
      1. contraction of had: They'd already left.
      2. contraction of would: I'd like to see it.
      3. contraction of did: Where'd you go?
      4. contraction of -ed: She OK'd the plan.

    D,  Symbol.
    1. [sometimes: d] the Roman numeral for 500.

    D.,  an abbreviation of:
    1. day.
    2. December.
    3. Democrat.
    4. Democratic.
    5. Doctor.

    d.,  an abbreviation of:
    1. date.
    2. daughter.
    3. day.
    4. deceased.
    5. diameter.
    6. died.

    WordReference Random House Unabridged Dictionary of American English © 2026
    D, d  (dē),USA pronunciation n., pl. D's or Ds, d's or ds. 
    1. the fourth letter of the English alphabet, a consonant.
    2. any spoken sound represented by the letter D or d, as in dog, ladder, ladle, or pulled.
    3. something having the shape of a
    4. a written or printed representation of the letter D or d.
    5. a device, as a printer's type, for reproducing the letter D or d.

    d-, 
    1. Biochemistry[Symbol, Biochem.](of a molecule) having a configuration resembling the dextrorotatory isomer of glyceraldehyde: always printed as a small capital, roman character (distinguished from l-). Cf. d-.

    d-, [Symbol, Chem., Biochem.]
    1. Chemistry, Biochemistrydextrorotatory;
      dextro- (distinguished from l-). Cf. D-.

    d'1 ,prep. 
    1. Foreign Termsde (used in French names as an elided form of de):Charles Louis d'Albert.
    2. Foreign Termsdi (used in Italian names as an elided form of di):Gabriele d'Annunzio.

    d'2 ,
    1. Grammar[Pron. Spelling.]contraction of do or did before you:How d'you like your eggs cooked? D'you go to the movies last night?

    'd, 
      1. contraction of had: I was glad they'd gone.
      2. contraction of did: Where'd they go?
      3. contraction of should or would: He'd like to go. I'd like to remind you of your promise.
      4. contraction of -ed: She OK'd the plan.

    D, 
      1. [Elect.]debye.
      2. Educationdeep.
      3. depth.
      4. Music and Dance, Optics[Optics.]diopter.
      5. divorced.
      6. ChemistryDutch.

    D,  Symbol.
    1. the fourth in order or in a series.
    2. (sometimes l.c.) (in some grading systems) a grade or mark, as in school or college, indicating the quality of a student's work as poor or barely passing.
    3. (sometimes l.c.) a classification, rating, or the like, indicating poor quality.
    4. [Music.]
      • the second tone in the scale of C major, or the fourth tone in the relative minor scale, A minor.
      • a string, key, or pipe tuned to this tone.
      • a written or printed note representing this tone.
      • (in the fixed system of solmization) the second tone of the scale of C major, called re.
      • the tonality having D as the tonic note.
    5. (sometimes l.c.) the Roman numeral for 500. Cf. Roman numerals.
    6. [Chem.]deuterium.
    7. [Elect.]
      • electric displacement.
      • a battery size for 1.5 volt dry cells: diameter, 1.3 in. (3.3 cm);
        length, 2.4 in. (6 cm).
    8. Biochemistryaspartic acid.
    9. Clothinga symbol for a shoe width size narrower than E and wider than C.
    10. Clothinga proportional brassiere cup size larger than C.

    D., 
      1. day.
      2. December.
      3. Democrat.
      4. Democratic.
      5. Physicsdensity.
      6. ReligionDeus.
      7. BibleDeuteronomy.
      8. Doctor.
      9. dose.
      10. Dutch.

    d., 
      1. (in prescriptions) give.
      2. date.
      3. daughter.
      4. day.
      5. deceased.
      6. deep.
      7. degree.
      8. delete.
      9. British Terms, Currencypence.
      10. British Terms, Currencypenny.
      11. Physicsdensity.
      12. depth.
      13. deputy.
      14. dialect.
      15. dialectal.
      16. diameter.
      17. died.
      18. dime.
      19. dividend.
      20. dollar;
        dollars.
      21. dose.
      22. drachma.

    'DD' also found in these entries (note: many are not synonyms or translations):

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