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1D
Language
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See also:
1-D
,
1d
,
and
1/d
Contents
1
English
1.1
Noun
1.2
Proper noun
1.2.1
Derived terms
English
edit
Noun
edit
1D
(
plural
1Ds
)
(
American football
)
Initialism of
first down
.
Proper noun
edit
1D
The British
boy band
One Direction
.
Derived terms
edit
1Der