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DWI
dwindle
dwindler
DWR
dwt.
DX
Dy
dy.
dyad
Dyak
dyarchy
dybbuk
dye
dyed-in-the-wool
dyeline
dyer’s greenweed
dyer’s rocket
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dyad

dy·ad [ d àd ] (plural dy·ads)


noun 
Definition:
 
1. couple: two individual units, things, or people linked as a pair ( formal )

2. chemistry atom with valence of two: an atom or chemical group with a valence of two

3. mathematics vector operator: a mathematical operator consisting of two vectors expressed without a multiplication sign between them

4. music two-note chord: a musical chord consisting of two notes

[Late 17th century. Via late Latin< Greek duad-< duo "two"]

dy·ad·ic [ dī áddik ] adjective
dy·ad·i·cal·ly [ dī áddikəlee ] adverb
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