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diprotodont
dipso
dipsomania
dipsomaniac
dipstick
dipteran
diptych
dipyridamole
diquat
Dirac constant
Dirac equation
dire
dire straits
dire wolf
direct
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diquat
di·quat [ d kwòt ]


noun 
Definition:
 
herbicide: a biodegradable herbicide used to control weeds in water
[Mid-20th century. <di-1 + quaternary; because based on a quaternary amine]
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