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semiquinone

American  
[sem-ee-kwi-nohn, -kwin-ohn, sem-ahy-] / ˌsɛm i kwɪˈnoʊn, -ˈkwɪn oʊn, ˌsɛm aɪ- /

noun

Chemistry.

  1. any of the class of free radicals formed as intermediates in the oxidation of a hydroquinone to a quinone.

Etymology

Origin of semiquinone

semi- + quinone

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

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

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