tocopherol

noun
to·​coph·​er·​ol | \ tō-ˈkä-fə-ˌrȯl How to pronounce tocopherol (audio) , -ˌrōl\

Definition of tocopherol

: any of several fat-soluble oily phenolic compounds with varying degrees of antioxidant vitamin E activity especially : alpha-tocopherol

Examples of tocopherol in a Sentence

Recent Examples on the Web

The three most common allergens were fragrances, parabens and tocopherol. Jane E. Brody, idahostatesman, "Choosing the best moisturizer for your skin | Idaho Statesman," 29 Oct. 2017 The three most common allergens were fragrances, parabens and tocopherol. Jane E. Brody, idahostatesman, "Choosing the best moisturizer for your skin | Idaho Statesman," 29 Oct. 2017 The three most common allergens were fragrances, parabens and tocopherol. Jane E. Brody, idahostatesman, "Choosing the best moisturizer for your skin | Idaho Statesman," 29 Oct. 2017 The three most common allergens were fragrances, parabens and tocopherol. Jane E. Brody, New York Times, "Choosing the Best Moisturizer for Your Skin," 16 Oct. 2017 The three most common allergens were fragrances, parabens and tocopherol. Jane E. Brody, idahostatesman, "Choosing the best moisturizer for your skin | Idaho Statesman," 29 Oct. 2017 The three most common allergens were fragrances, parabens and tocopherol. Jane E. Brody, idahostatesman, "Choosing the best moisturizer for your skin | Idaho Statesman," 29 Oct. 2017 The three most common allergens were fragrances, parabens and tocopherol. Jane E. Brody, New York Times, "Choosing the Best Moisturizer for Your Skin," 16 Oct. 2017 Its tocopherol (vitamin E) is a potent natural antioxidant, which protects hair from environmental wear and damage. Jihan Forbes, Allure, "Review: Sashapure's Perfectly Defining Curl Cream," 17 Aug. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'tocopherol.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of tocopherol

circa 1936, in the meaning defined above

History and Etymology for tocopherol

toco- (combining form from Greek tókos "childbirth, act of giving birth [of animals]") + Greek phérein "to carry, bring, bring about, produce" + -ol entry 1; so named because it was found to be a dietary factor essential for reproduction in rats — more at dystocia, bear entry 2

Note: The name tocopherol was introduced in an article by the American anatomist and embryologist Herbert McLean Evans (1882-1971), the biochemist and nutritionist Gladys Anderson Emerson (1903-84), and the biochemist Oliver Huddleston Emerson ("The isolation from wheat germ oil of an alcohol, α-tocopherol, having the properties of Vitamin E," Journal of Biological Chemistry, vol. 113, no. 1 [February 1, 1936], pp. 319-32). The isolation of α-tocopherol is generally credited to Gladys Emerson.

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Last Updated

17 Sep 2019

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The first known use of tocopherol was circa 1936

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More Definitions for tocopherol

tocopherol

noun
to·​coph·​er·​ol | \ tō-ˈkäf-ə-ˌrȯl How to pronounce tocopherol (audio) , -ˌrōl How to pronounce tocopherol (audio) \

Medical Definition of tocopherol

: any of several fat-soluble oily phenolic compounds with varying degrees of antioxidant vitamin E activity especially : alpha-tocopherol

More from Merriam-Webster on tocopherol

Britannica.com: Encyclopedia article about tocopherol

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