parathion

UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/ˌpærəˈθaɪɒn/US:USA pronunciation: respellingUSA pronunciation: respelling(par′ə thī′on)


WordReference Random House Unabridged Dictionary of American English © 2026
par•a•thi•on  (par′ə thī′on),USA pronunciation n. [Chem.]
  1. Chemistry, Pest Controla deep-brown to yellow, poisonous liquid, C10H14NO5PS, used as an insecticide.
  • para-1 + thi- + -on(e) 1945–50

Collins Concise English Dictionary © HarperCollins Publishers::
parathion /ˌpærəˈθaɪɒn/ n
  1. a slightly water-soluble toxic oil, odourless and colourless when pure, used as an insecticide. Formula: C10H14NO5PS
Etymology: 20th Century: from para-1 + thio- + -on
'parathion' also found in these entries (note: many are not synonyms or translations):
-on - methyl parathion

Forum discussions with the word(s) "parathion" in the title:


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