Definition of d
(Entry 1 of 6)
1a
: the 4th letter of the English alphabet
Her middle initial is d.
b
: a graphic representation of this letter
a half moon in the shape of a d
c
linguistics
: the speech sound that the written letter d represents : a speech counterpart of orthographic d
4
: a graphic device for reproducing the letter d
the d on my computer keyboard
5
: one designated d especially as the fourth in order or class
option d
6 education
a
: a grade rating a student's work as poor in quality
got a d on the test
b
: one graded or rated with a D
7
: something shaped like the letter D
specifically
: a semicircle on a pool table about 23 inches in diameter for use especially in snooker
d
abbreviation (1)Definition of d (Entry 2 of 6)
1
date
2
daughter
3
day
4
dead; deceased
5
deci-
6
degree
7
[ Latin denarius, denarii ]
penny; pence
8
depart; departure
9
diameter
10
differential
11
dimensional
12
distance
13
dorsal
14
down (see down entry 5 sense 6)
15
drive; driving
D
abbreviation (2)Definition of D (Entry 3 of 6)
1
Democrat
2
derivative
3
dollar
4
Dutch
D
symbol (1)Definition of D (Entry 4 of 6)
deuterium
d-
prefix
\ ˌdē, ˈdē\
Definition of d- (Entry 5 of 6)
1
: dextrorotatory
d-tartaric acid
2
: having a similar configuration at a selected carbon atom to the configuration of dextrorotatory glyceraldehyde
—usually printed as a small capital d-fructose
-d
symbol (2)Definition of -d (Entry 6 of 6)
—used after the figure 2 or 3 to indicate the ordinal number second or third 2d53d
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