- 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.
- 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.
- 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.
- electric displacement.
- a battery size for 1.5 volt dry cells: diameter, 1.3 inches (3.3 cm); length, 2.4 inches (6 cm).
- 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.
- dextrorotatory; dextro- (distinguished from l-).
- (in prescriptions) give.
Origin of d.1
- British. pence.
Origin of d.2
- 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.
- 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-).
- 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.
- Pronunciation Spelling. contraction of do or did before you: How d'you like your eggs cooked? D'you go to the movies last night?
- (in prescriptions) daily.
Origin of in d.
Examples from the Web for d
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
December 14, 2014
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
They were advised to “try showing a little class” and “[d]ress like you deserve respect, not a spot at a bar.”Let’s Not Forget: We Were All Teenagers Once
December 1, 2014
In April, Wehby was the front-runner; now, she is trailing badly and Oregon is safely in the D column.What Do Women Want? Not the GOP
September 8, 2014
Wall Street Journal: “[D]eeply researched and totally absorbing[.]”The Best Biographies of 2014 (So Far)
July 6, 2014
When you solve a sum you go from "a" to "b" and from "b" to "c" and from "c" to "d" and so on.Ancient Man
Hendrik Willem van Loon
About half-way home George suddenly shouted, "D——d if I don't do it too!"Camps, Quarters and Casual Places
Put it in your pipe, my man,—put it in your pipe—not worth a d—-!
But those d—-d fellows learn of the mad doctors how to tame us.
D--n the rogues; I thought at one time they had me in a category!Homeward Bound
James Fenimore Cooper
- 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
- 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
- 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
- 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) 500See Roman numerals
- Germany (international car registration)
- Australian informaldefenceI'm playing D in the match this afternoon
- Australian informaldefensive play
- Deutsch: indicating the serial number in the catalogue (1951) of the musical compositions of Schubert made by Otto Deutsch (1883–1967)
- (in animal pedigrees) dam
- British currency penny or pennies
- US politics Democrat(ic)
- government Department
- Don (a Spanish title)
- (in the US and Canada) Doctor
- would or hadI'd; you'd
Word Origin and History for d
fourth letter of the Roman alphabet, from Greek delta, from Phoenician and Hebrew daleth, pausal form of deleth "door," so called from its shape. The sign for "500" in Roman numerals. 3-D for "three-dimensional" is attested from 1953.
- in dies (daily)
- Relating to the configuration of d-glyceraldehyde, a compound chosen as the basis for stereochemical nomenclature because it is the simplest carbohydrate that can form optical isomers:d-fructose.
- To the right; dextro:d-tartaric acid.
- Abbreviation of diameter