Showing Results for "D"

See Also:

• a variation of 2H.

Jump to:

• 'd
  'd

  contraction of had:
• D
  D

  noun

  the fourth letter of the English alphabet, a consonant.
• D-
  D-

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

  preposition

  de (used in French names as an elided form ofde ).
• d-
  d-

  dextrorotatory; dextro- (distinguished from l-).
• d.
  d.

  abbreviation

  (in prescriptions) give.
• D.
  D.

  abbreviation

  day.
• d
  d

  symbol

  physics density or relative density

'd

¹ American  

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 ² American  

[dee] / di /

Or d

noun

D's, plural Ds, plural d's, plural ds plural

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 D .

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 ³ American  

abbreviation

1. Electricity. debye; debyes.

2. deep.

3. depth.

4. Optics. diopter.

5. divorced.

6. Dutch.

---

D ⁴ American  

Symbol.

1. the fourth in order or in a series.

2. (sometimes lowercase) (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 lowercase) a classification, rating, or the like, indicating poor quality.

4. Music.

   1. the second tone in the scale of C major, or the fourth tone in the relative minor scale, A minor.

   2. a string, key, or pipe tuned to this tone.

   3. a written or printed note representing this tone.

   4. (in the fixed system of solmization) the second tone of the scale of C major, called re.

   5. the tonality having D as the tonic note.

5. (sometimes lowercase) the Roman numeral for 500.

6. Chemistry. deuterium. Also 2H

7. Electricity.

   1. electric displacement.

   2. a battery size for 1.5 volt dry cells: diameter, 1.3 inches (3.3 centimeters); length, 2.4 inches (6 centimeters).

8. Biochemistry. aspartic acid.

9. a symbol for a shoe width size narrower than E and wider than C.

10. a proportional brassiere cup size larger than C.

---

D- ⁵ American  

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

---

d' ⁶ American  

preposition

1. de (used in French names as an elided form ofde ).

   Charles Louis d'Albert.

2. di (used in Italian names as an elided form ofdi ).

   Gabriele d'Annunzio.

---

d' ⁷ American  

1. Informal. contraction of do or did before you:

   How d'you like your eggs cooked? D'you go to the movies last night?

---

d- ⁸ American  

Symbol, Chemistry, Biochemistry.

1. dextrorotatory; dextro- (distinguished from l-).

---

d. ⁹ American  

abbreviation

1. (in prescriptions) give.

---

d. ¹⁰ American  

abbreviation

1. British. pence.

---

d. ¹¹ American  

abbreviation

1. date.

2. daughter.

3. day.

4. deceased.

5. deep.

6. degree.

7. delete.

8. Physics. density.

9. depth.

10. deputy.

11. dialect.

12. dialectal.

13. diameter.

14. died.

15. dime.

16. dividend.

17. dollar; dollars.

18. dose.

19. drachma.

---

D. ¹² American  

abbreviation

1. day.

2. December.

3. Democrat.

4. Democratic.

5. Physics. density.

6. Deus.

7. Deuteronomy.

8. Doctor.

9. dose.

10. Dutch.

---

d ¹ British  

symbol

1. physics density or relative density

2. maths a small increment in a given variable or function: used to indicate a derivative of one variable with respect to another, as in d y /d x

3. chess See algebraic notation

---

D. ² British  

abbreviation

1. politics Democrat(ic)

2. government Department

3. dinar(s)

4. Don (a Spanish title)

5. Duchess

6. Duke

7. (in the US and Canada) Doctor

---

D ³ British  

symbol

1. music

   1. a note having a frequency of 293.66 hertz ( D above middle C ) or this value multiplied or divided by any power of 2; the second note of the scale of C major

   2. a key, string, or pipe producing this note

   3. the major or minor key having this note as its tonic

2. chem deuterium

3. maths the first derivative of a function, as in D( x ³ + x ²) = 3 x ² + 2 x

4. physics

   1. dispersion

   2. electric displacement

5. aeronautics drag

6. 1. a semiskilled or unskilled manual worker, or a trainee or apprentice to a skilled worker

   2. ( as modifier ) See also occupation groupings

      D worker

7. 500 See Roman numerals

---

abbreviation

1. Germany (international car registration)

2. 1. informal defence

      I'm playing D in the match this afternoon

   2. informal defensive play

d ⁴ British  

/ diː /

noun

1. the fourth letter and third consonant of the modern English alphabet

2. a speech sound represented by this letter, usually a voiced alveolar stop, as in dagger

3. the semicircle on a billiards table having a radius of 11 1/ 2 inches and its straight edge in the middle of the baulk line

---

'd ⁵ British  

contraction

1. would or had

   I'd

   you'd

---

D ⁶ British  

abbreviation

1. Deutsch: indicating the serial number in the catalogue (1951) of the musical compositions of Schubert made by Otto Deutsch (1883–1967)

---

d. ⁷ British  

abbreviation

1. (in animal pedigrees) dam

2. daughter

3. currency penny or pennies

4. diameter

5. died

6. dinar(s)

7. dollar(s)

8. drachma(s)

---

d Scientific  

1. Abbreviation of diameter

---

Other Word Forms

Inflected Forms

noun

• Ds
  plural
• ds
  plural
• d's
  plural
• D's
  plural

Etymology

Origin of d.⁹

From the Latin word dā

Origin of d.¹⁰

From the Latin word denāriī

Example Sentences

D: I think it was fairly evident that while its not been pretty to watch at times, Steve has done a remarkable job and there is no other real candidates to take over for now.

From BBC • May 28, 2026

It is a C mark that could have been a D.

From BBC • May 26, 2026

Chuck D, rapper: I like Miles Davis and all the exterior aesthetics.

From Los Angeles Times • May 25, 2026

Patients with vitamin D deficiency were three times more likely to experience moderate to severe pain during the first 24 hours after surgery compared with patients who had adequate vitamin D levels.

From Science Daily • May 20, 2026

The differences between, say, a D sharp and an E flat, when this happens, are very small, but may be large enough to be noticeable.

From "Understanding Basic Music Theory" by Catherine Schmidt-Jones and Russel Jones