thiourea

American  

[thahy-oh-yoo-ree-uh, -yoor-ee-uh] / ˌθaɪ oʊ yʊˈri ə, -ˈyʊər i ə /

noun

Chemistry.

1. a colorless, crystalline, bitter-tasting, water-soluble solid, CH 4 N 2 S, derived from urea by replacement of the oxygen with sulfur: used chiefly in photography, inorganic synthesis, and to accelerate the vulcanization of rubber.

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thiourea British  

/ ˌθaɪəʊˈjʊərɪə /

noun

1. a white water-soluble crystalline substance with a bitter taste that forms addition compounds with metal ions and is used in photographic fixing, rubber vulcanization, and the manufacture of synthetic resins. Formula: H 2 NCSNH 2

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thiourea Scientific  

/ thī′ō-y-rē′ə /

1. A lustrous white crystalline compound used as a developer in photography and photocopying and in various organic syntheses. Thiourea has the same structure as urea, but with a sulfur atom in place of the oxygen atom. Chemical formula: CH ₄ N ₂ S.

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Etymology

Origin of thiourea

From New Latin, dating back to 1890–95; thio-, urea

Example Sentences

Many plants, including broccoli, evolved to produce bitter-tasting chemicals like thiourea to avoid being eaten.

From Washington Post • Jun. 12, 2020

Sometimes she wears a ventilator mask, such as when using thiourea dioxide, a color remover.

From Seattle Times • May 26, 2018