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rotenone

American

[roht-n-ohn] / ˈroʊt nˌoʊn /

noun

Chemistry, Pharmacology.

a white, crystalline, water-insoluble, poisonous heterocyclic compound, C 2 3 H 2 2 O 6 , obtained from derris root: used chiefly as the active ingredient of certain insecticides and in medicine in the treatment of chiggers and scabies.

rotenone British

/ ˈrəʊtɪˌnəʊn /

noun

a white odourless crystalline substance extracted from the roots of derris: a powerful insecticide. Formula: C 23 H 22 O 6 ; relative density: 1.27; melting pt: 163°C

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of rotenone

1920–25; roten- (said to be < Japanese ) + -one

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

rotenone

A substance lethal to fish but approved by federal environmental regulators called rotenone will be disseminated starting Aug. 26.

From Seattle Times ● Aug. 18, 2023

Once the treatment is complete, another chemical will be released to dilute the rotenone, the park service said.

From Seattle Times ● Aug. 18, 2023

Greenamyre realized he might be able to mimic the disease in rats by exposing them to rotenone.

From Science Magazine ● May 4, 2023

Explain the use of methylene blue as an antidote for rotenone poisoning.

From Textbooks ● Jun. 9, 2022

Such chemicals already exist: the pyrethrins, rotenone, ryania, and others derived from plant substances.

From "Silent Spring" by Rachel Carson

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023