9 entries found for d.
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d d[1] D D layer 3-D 2-D 2, 4-D vitamin D R & D

Main Entry: d
Pronunciation: d
Function: noun
Inflected Form(s): plural d's or ds
Usage: often capitalized
1 : the fourth letter of the English alphabet
2 : five hundred in Roman numerals -- see NUMBER table
3 : the musical note referred to by the letter D : the second tone of the C-major scale
4 : a grade rating a student's work as poor