Standard Lemma guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
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noun
An organophosphorus insecticide acaricide, [O,O-diethyl-O-4-nitro-phenylthiophosphate], a powerful, dangerously toxic insecticide.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
a colorless and odorless toxic oil used as an insecticide
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
Broader terms: insecticide, insect powder
History
Etymology tree Proto-Indo-European *per- Proto-Indo-European *preh2- Proto-Hellenic *pərai Ancient Greek πᾰρᾰ́ (părắ) Ancient Greek πᾰρᾰ- (pără-)der. English para- English -thion English parathion From para- (“p-”) + -thion.
