D
1 Americannoun
plural
D's, Ds, d's, ds-
the fourth letter of the English alphabet, a consonant.
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any spoken sound represented by the letter D or d, as in dog, ladder, ladle, or pulled.
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something having the shape of a D .
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a written or printed representation of the letter D or d.
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a device, as a printer's type, for reproducing the letter D or d.
abbreviation
abbreviation
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date.
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daughter.
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day.
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deceased.
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deep.
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degree.
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delete.
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Physics. density.
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depth.
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deputy.
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dialect.
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dialectal.
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diameter.
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died.
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dime.
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dividend.
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dollar; dollars.
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dose.
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drachma.
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the fourth in order or in a series.
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(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.
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(sometimes lowercase) a classification, rating, or the like, indicating poor quality.
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Music.
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the second tone in the scale of C major, or the fourth tone in the relative minor scale, A minor.
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a string, key, or pipe tuned to this tone.
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a written or printed note representing this tone.
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(in the fixed system of solmization) the second tone of the scale of C major, called re.
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the tonality having D as the tonic note.
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(sometimes lowercase) the Roman numeral for 500.
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Chemistry. deuterium. Also 2H
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Electricity.
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electric displacement.
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a battery size for 1.5 volt dry cells: diameter, 1.3 inches (3.3 centimeters); length, 2.4 inches (6 centimeters).
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Biochemistry. aspartic acid.
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a symbol for a shoe width size narrower than E and wider than C.
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a proportional brassiere cup size larger than C.
abbreviation
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day.
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December.
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Democrat.
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Democratic.
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Physics. density.
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Deus.
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Deuteronomy.
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Doctor.
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dose.
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Dutch.
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contraction of had:
I was glad they'd gone.
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contraction of did:
Where'd they go?
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contraction of should or would:
He'd like to go. I'd like to remind you of your promise.
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contraction of -ed:
She OK'd the plan.
preposition
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de (used in French names as an elided form ofde ).
Charles Louis d'Albert.
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di (used in Italian names as an elided form ofdi ).
Gabriele d'Annunzio.
abbreviation
abbreviation
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politics Democrat(ic)
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government Department
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dinar(s)
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Don (a Spanish title)
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Duchess
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Duke
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(in the US and Canada) Doctor
noun
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the fourth letter and third consonant of the modern English alphabet
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a speech sound represented by this letter, usually a voiced alveolar stop, as in dagger
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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
symbol
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physics density or relative density
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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
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chess See algebraic notation
contraction
abbreviation
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(in animal pedigrees) dam
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daughter
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currency penny or pennies
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diameter
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died
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dinar(s)
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dollar(s)
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drachma(s)
abbreviation
symbol
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music
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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
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a key, string, or pipe producing this note
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the major or minor key having this note as its tonic
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chem deuterium
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maths the first derivative of a function, as in D( x ³ + x ²) = 3 x ² + 2 x
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physics
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dispersion
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electric displacement
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aeronautics drag
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a semiskilled or unskilled manual worker, or a trainee or apprentice to a skilled worker
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( as modifier ) See also occupation groupings
D worker
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500 See Roman numerals
abbreviation
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Germany (international car registration)
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informal defence
I'm playing D in the match this afternoon
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informal defensive play
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Etymology
Origin of d.1
From the Latin word denāriī
Origin of d.1
From the Latin word dā
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
With a 10% return, you’d have $1 million.
From MarketWatch
Of course, there are additional funding options such as loans, grants and scholarships — but those numbers are, roughly speaking, the kind you’d be looking at covering.
From MarketWatch
“You’d feel guilty getting up to use the restroom,” Abboud said.
The last time they’d tried this hike, they’d strayed off-track and missed the hot springs, so this time, they were savoring the scene.
From Los Angeles Times
So Plemons has either made two or four films with them, though Lanthimos is quick to point out he’d cast him in another the actor had to back out of, so “You could have had a fifth film in the bag!”
From Los Angeles Times
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.