n.
Pronunciation: - ' fäs-f( ə -)r ə s
Variant: also or · gan · o · phos · pho · rous \ -fäs- ' fo ̇ r- ə s \
Function: adjective
Date: 1950
: of, relating to, or being a phosphorus-containing organic compound and especially a pesticide (as malathion) that acts by inhibiting cholinesterase
– organophosphorus noun