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
A toxic crystalline substance obtained from the roots of derris and related plants, widely used as an insecticide.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Topics: chemistry, natural-sciences, physical-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
a white crystalline insecticide that has low toxicity for mammals; is used in home gardens; extracted from the roots of derris and cube
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
From Japanese ローテン (rōten) + -one (“ketone”), from Hokkien 蘆藤 /芦藤 (lôo-tîn, “Derris elliptica”).
