'd

contraction of had:I was glad they'd gone.
contraction of did:Where'd they go?

contraction of should or would:He'd like to go. I'd like to remind you of your promise.
contraction of -ed:She OK'd the plan.

Other definitions for d' (2 of 12)

d'¹

preposition

de (used in French names as an elided form of de): Charles Louis d'Albert.
di (used in Italian names as an elided form of di): Gabriele d'Annunzio.

Other definitions for d' (3 of 12)

d'²

Informal. contraction of do or did before you:How d'you like your eggs cooked? D'you go to the movies last night?

Other definitions for D (4 of 12)

D¹

or d

[ dee ]

noun,plural D's or Ds, d's or ds.

the fourth letter of the English alphabet, a consonant.
any spoken sound represented by the letter D or d, as in dog, ladder, ladle, or pulled.

something having the shape of a D.
a written or printed representation of the letter D or d.
a device, as a printer's type, for reproducing the letter D or d.

Other definitions for D (5 of 12)

D²

abbreviation

Electricity. debye; debyes.
deep.

depth.
Optics. diopter (def. 1).
divorced.
Dutch (def. 7).

Other definitions for D (6 of 12)

D³

Symbol.

the fourth in order or in a series.
(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.

(sometimes lowercase) a classification, rating, or the like, indicating poor quality.
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.
(sometimes lowercase) the Roman numeral for 500.: Compare Roman numerals.
Chemistry. deuterium. : Also 2H
Electricity.
- electric displacement.
- a battery size for 1.5 volt dry cells: diameter, 1.3 inches (3.3 centimeters); length, 2.4 inches (6 centimeters).
Biochemistry. aspartic acid.
a symbol for a shoe width size narrower than E and wider than C.
a proportional brassiere cup size larger than C.

Other definitions for d- (7 of 12)

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

Compare d-.

Other definitions for d- (8 of 12)

Symbol, Chemistry, Biochemistry.

dextrorotatory; dextro- (distinguished from l-).

Compare d-.

Other definitions for d. (9 of 12)

d.¹

abbreviation

(in prescriptions) give.

Origin of d.

⁹

From the Latin word dā

Other definitions for d. (10 of 12)

d.²

abbreviation

British. pence.

Origin of d.

¹⁰

From the Latin word denāriī

Other definitions for d. (11 of 12)

d.³

abbreviation

date.
daughter.

day.
deceased.
deep.
degree.
delete.
Physics. density.
depth.
deputy.
dialect.
dialectal.
diameter.
died.
dime.
dividend.
dollar; dollars.
dose.
drachma.

Other definitions for D. (12 of 12)

abbreviation

day.
December.

Democrat.
Democratic.
Physics. density.
Deus.
Deuteronomy.
Doctor.
dose.
Dutch.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use 'd in a sentence

“Gronkowski” itself never manages to sound more erotic than the name of a hearty Polish stew or a D-list WWE performer.
‘A Gronking to Remember’ Speed Read: 8 Naughtiest Bits | Emily Shire | January 7, 2015 | THE DAILY BEAST
I take calcium and vitamin D supplements, but prescription medications are generally only for women in menopause.
You’re Never ‘Cured’ of an Eating Disorder | Carrie Arnold | December 20, 2014 | THE DAILY BEAST
Then Pascal responds (in all caps) with, “BUT WE DIDNT WIN A D [sic] YOU KNOW HIM.”
Exclusive: Sony Emails Blast David O. Russell For Allegedly ‘Feeling Up’ Transgender Niece | William Boot | December 14, 2014 | THE DAILY BEAST
The move gets an “A” for symbolism and a “D” for everything else.
Sony Blames North Korea for Hacking, but Washington Left Them Completely Vulnerable | Gordon G. Chang | December 3, 2014 | THE DAILY BEAST
Sen. Claire McCaskill (D-MO), a leading voice on police demilitarization, was supportive of the White House announcement.
SWAT Lobby Shoots to Kill Police Reform After Ferguson | Tim Mak | December 2, 2014 | THE DAILY BEAST

C was a Captain, all covered with lace; D was a drunkard, and had a red face.
Boys and Girls Bookshelf; a Practical Plan of Character Building, Volume I (of 17) | Various
D'o l'on peut aussy veoir, quelle esperance il y a de planter une belle chrestient par tels evangelistes.
The Jesuit Relations and Allied Documents, Vol. II: Acadia, 1612-1614 | Various
Neither of us spoke again, and at length the squat log buildings of Pend d' Oreille loomed ahead of us in the night.
Raw Gold | Bertrand W. Sinclair
He picked out that simple little study of Cramer in D major in the first book—you know it well—and asked me to play it.
Music-Study in Germany | Amy Fay
(d) Excess balances may, at the convenience of each federal reserve bank, remain deposited with the gold settlement fund.
Readings in Money and Banking | Chester Arthur Phillips

British Dictionary definitions for d (1 of 7)

D

/ (diː) /

nounplural d's, D's or Ds

the fourth letter and third consonant of the modern English alphabet
a speech sound represented by this letter, usually a voiced alveolar stop, as in dagger

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

British Dictionary definitions for d (2 of 7)

symbol for

physics density or relative density
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

chess See algebraic notation

British Dictionary definitions for 'd (3 of 7)

contraction of

would or had: I'd; you'd

British Dictionary definitions for D (4 of 7)

abbreviation for

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

British Dictionary definitions for D (5 of 7)

symbol for

music
- 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
- a key, string, or pipe producing this note
- the major or minor key having this note as its tonic
chem deuterium

maths the first derivative of a function, as in D(x ³ + x ²) = 3 x ² + 2 x
physics
- dispersion
- electric displacement
aeronautics drag
- a semiskilled or unskilled manual worker, or a trainee or apprentice to a skilled worker
- (as modifier): D worker See also occupation groupings
(Roman numeral) 500: See Roman numerals

abbreviation for

Germany (international car registration)
- Australian informal defence: I'm playing D in the match this afternoon
- Australian informal defensive play

Origin of D

⁵

(for sense 8) from German Deutschland

British Dictionary definitions for d. (6 of 7)

abbreviation for

(in animal pedigrees) dam
daughter

British currency penny or pennies
diameter
died
dinar(s)
dollar(s)
drachma(s)

Origin of d.

⁶

(sense 3 and 6) Latin denarius

British Dictionary definitions for D. (7 of 7)

abbreviation for

US politics Democrat(ic)
government Department

dinar(s)
Don (a Spanish title)
Duchess
Duke
(in the US and Canada) Doctor

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for d

Abbreviation of diameter

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