Definitions for D

This page provides all possible meanings and translations of the word D

Random House Webster's College Dictionary

D, ddi(n.)(pl.)Ds; D's, ds; d's.

  1. the fourth letter of the English alphabet, a consonant.

    Category: Language/Linguistics

  2. any spoken sound represented by this letter.

    Category: Language/Linguistics

  3. something shaped like aD.

  4. a written or printed representation of the letter D or



  1. (of a molecule) having a configuration resembling the dextrorotatory isomer of glyceraldehyde: printed as a small capital, roman character

    Category: Biochemistry

    Ref: (disting. from l - 8 ).

* Biochem. Symbol..


  1. dextrorotatory; dextro-

    Category: Chemistry, Biochemistry

    Ref: (disting. from l- 7 ).

* Symbol..


  1. do (esp. before you):

    How d'you like them?

* Pron. Spelling..


  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.


  1. deep.

  2. depth.

  3. diopter.

    Category: Optics

  4. divorced.

  5. Dutch.


  1. the fourth in order or in a series.

  2. (sometimes l.c.) (in some grading systems) a grade or mark indicating poor or barely acceptable quality.

    Category: Education

  3. the second note of the ascending C major scale. a tonality having D as the tonic.

    Category: Music and Dance

  4. (sometimes l.c.) the Roman numeral for 500.

    Ref: Compare Roman numerals.

  5. deuterium.

    Category: Chemistry

  6. Category: Biochemistry

    Ref: aspartic acid.

* Symbol..


  1. day.

  2. December.

  3. Democrat.

  4. Democratic.

  5. Physics. density.

    Category: Physics

  6. Deus.

    Category: Religion

  7. Deuteronomy.

    Category: Bible

  8. Doctor.

  9. dose.

  10. Dutch.


  1. date.

  2. daughter.

  3. day.

  4. deceased.

  5. deep.

  6. degree.

  7. delete.

  8. Brit. pence.

    Category: British, Numismatics

  9. Chiefly Brit. penny.

    Category: British, Numismatics

  10. Physics. density.

    Category: Physics

  11. depth.

  12. deputy.

  13. dialect.

  14. diameter.

  15. died.

  16. dime.

  17. dividend.

  18. dollar.

    Category: Numismatics

  19. dose.

  20. drachma.

Origin of d.:

< L denāriī]; [< L denārius

Princeton's WordNet

  1. vitamin D, calciferol, viosterol, ergocalciferol, cholecalciferol, D(noun)

    a fat-soluble vitamin that prevents rickets

  2. five hundred, 500, D(noun)

    the cardinal number that is the product of one hundred and five

  3. D, d(adj)

    the 4th letter of the Roman alphabet

  4. five hundred, 500, d(adj)

    denoting a quantity consisting of 500 items or units

Kernerman English Learner's Dictionary

  1. D(noun)ˈi

    a grade showing a piece of work is below average

    He got a D on the test.


  1. d(Preposition)


  2. d(Verb)

    had (marking the pluperfect tense)

  3. d(Verb)

    (some dialects) Had, possessed.

  4. d(Verb)


  5. d(Verb)


  6. d(Suffix)

    traditional English past tense indicator, largely replaced by -ed.

  7. d(Suffix)

    Used to form the past tense of some numerals, letters, and abbreviations, especially in online communication. Compare 's.

  8. D(Noun)

    An academic grade given by certain institutions. Slightly better than a D and slightly worse than a C-.

Webster Dictionary

  1. D

    the fourth letter of the English alphabet, and a vocal consonant. The English letter is from Latin, which is from Greek, which took it from Ph/nician, the probable ultimate origin being Egyptian. It is related most nearly to t and th; as, Eng. deep, G. tief; Eng. daughter, G. tochter, Gr. qyga`thr, Skr. duhitr. See Guide to Pronunciation, Ã178, 179, 229.

  2. D

    the nominal of the second tone in the model major scale (that in C), or of the fourth tone in the relative minor scale of C (that in A minor), or of the key tone in the relative minor of F

  3. D

    as a numeral D stands for 500. in this use it is not the initial of any word, or even strictly a letter, but one half of the sign / (or / ) the original Tuscan numeral for 1000


  1. D

    The D programming language is an object-oriented, imperative, multi-paradigm system programming language created by Walter Bright of Digital Mars. Though it originated as a re-engineering of C++, D is a distinct language, having redesigned some core C++ features while also taking inspiration from other languages, notably Java, Python, Ruby, C#, and Eiffel. D's design goals attempt to combine the performance of compiled languages with the safety and expressive power of modern dynamic languages. Idiomatic D code is commonly as fast as equivalent C++ code, while being shorter and memory-safe. Type inference, automatic memory management and syntactic sugar for common types allow faster development, while bounds checking, design by contract features and a concurrency-aware type system help reduce the occurrence of bugs.


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