fibroin

noun

fi·​bro·​in ˈfī-brə-wən How to pronounce fibroin (audio)
ˈfi-,
-brō-ən
: an insoluble protein comprising the filaments of the raw silk fiber

Examples of fibroin in a Sentence

Recent Examples on the Web
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The formula is powered by zinc oxide, two silk proteins (sericin and fibroin), niacinamide, squalane, and hyaluronic acid to protect, moisturize, and prep skin for makeup. Annie Blackman, Allure, 2 Dec. 2024 Rafael Martin/Europa Press/Abaca/Sipa USA/AP Their team mixed lavender oil into a warm solution of fibroin, a flexible protein made by silkworms, and gum arabic, a substance from acacia trees that helps stabilize materials. Erika Page, The Christian Science Monitor, 4 Nov. 2024 The researchers’ sticky fibers come from silk moth cocoons, which are broken down into their fibroin protein building blocks by boiling them in solution. New Atlas, 10 Oct. 2024 The most common types are soybean peptides, silk fibroin peptides, and rice peptides. Sarah Madaus, SELF, 27 July 2022 The formula features the brand's silk protein, which is a blend of sericin and fibroin. Sarah Han, Allure, 14 June 2022 This luxurious ingredient contains two proteins — sericin and fibroin — that can benefit skin health, according to Morgan Rabach, M.D., a clinical assistant professor of dermatology at Mount Sinai in New York City. Jennifer Hussein, Allure, 1 Mar. 2022 Three types of silk (fibroin, sericin, and silk powder) also blur enlarged pores and absorb excess oil, so skin doesn't appear overly shiny. Sarah Han, Allure, 16 Sep. 2021 Unlike black widows, Silkworms extrude only one type of fiber, made of a protein complex called silk fibroin. Max G. Levy, Wired, 28 June 2021

Word History

Etymology

French fibroïne, from fibr- + -ine -in

First Known Use

1878, in the meaning defined above

Time Traveler
The first known use of fibroin was in 1878

Dictionary Entries Near fibroin

Cite this Entry

“Fibroin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fibroin. Accessed 23 Dec. 2024.

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