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Related to organophosphorus compounds: organophosphorus compound poisoning
or·gan·o·phos·phor·us com·pounds(ōr'gă-nō-fos'fŏr-ŭs kom'powndz)
A group of phosphorus-containing organic compounds that produce cholinergic effects in the body by acting as anticholinesterases, i.e., by inactivating the enzyme cholinesterase. These compounds include certain insecticides ("OP insecticides") and also all of the chemical-warfare nerve agents. Also incorrectly called organaphosphates.