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.

---

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

---

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.

---

Etymology

Origin of thiourea

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

Example Sentences

In all, 57 tons of potassium amyl xanthate, used in mines and pulp mills, and thiourea dioxide, used to manufacture textiles, were aboard the Zim Kingston in four containers: two that fell overboard and the two that caused the onboard fire.

From Seattle Times

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

From Washington Post

Discovered by accident, the polymer is able to self-heal when a small crack forms thanks to a substance called thiourea.

From BBC

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

From Seattle Times