diazinon Syllabification: (di·az·i·non)Pronunciation: /dīˈazəˌnän/Definition of diazinon noun an organophosphorus insecticide derived from pyrimidine. Origin: mid 20th century: from diazine (see di-1, azine) + -on (suffix of unknown origin)diazinon in other Oxford dictionaries Definition of diazinon in the British & World English dictionary
