Dictionary.com

thiouracil

[ thahy-oh-yoor-uh-sil ]
/ ˌθaɪ oʊˈyʊər ə sɪl /
Save This Word!

noun Pharmacology.
a white, slightly water-soluble, bitter, crystalline powder C4H4N2OS, used chiefly in treating hyperthyroidism by reducing the activity of the thyroid gland.
QUIZ
ARE YOU A TRUE BLUE CHAMPION OF THESE "BLUE" SYNONYMS?
We could talk until we're blue in the face about this quiz on words for the color "blue," but we think you should take the quiz and find out if you're a whiz at these colorful terms.
Question 1 of 8
Which of the following words describes “sky blue”?
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of thiouracil

First recorded in 1940–45; thio- + uracil
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for thiouracil

thiouracil
/ (ˌθaɪəʊˈjʊərəsɪl) /

noun
a white crystalline water-insoluble substance with an intensely bitter taste, used in medicine to treat hyperthyroidism; 2-thio-4-oxypyrimidine. Formula: C 4 H 4 N 2 OS

Word Origin for thiouracil

from thio- + uracil (uro- 1 + ac (etic) + -il -ile)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for thiouracil

thiouracil
[ thī′ō-yurə-sĭl′ ]

n.
A white crystalline compound that interferes with the synthesis of thyroxine, used to reduce thyroid gland activity, especially in the treatment of hyperthyroidism.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
FEEDBACK