Dictionary.com

allantoin

[ uh-lan-toh-in ]
/ əˈlæn toʊ ɪn /
Save This Word!

noun Biochemistry, Pharmacology.
a white powder, C4H6N4O3, produced by oxidation of uric acid and the major excretory product of purine degradation in many vertebrates: used medicinally to heal skin ulcers and in lotions, lipsticks, etc., for its soothing effect.
QUIZ
CAN YOU ANSWER THESE COMMON GRAMMAR DEBATES?
There are grammar debates that never die; and the ones highlighted in the questions in this quiz are sure to rile everyone up once again. Do you know how to answer the questions that cause some of the greatest grammar debates?
Question 1 of 7
Which sentence is correct?

Origin of allantoin

1835–45; allanto(is) + -in2; so named because it is found in the fluid of the allantois
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

British Dictionary definitions for allantoin

allantoin
/ (ˌælənˈtəʊɪn) /

noun
a substance derived from the secretions of snails and contained in some plants, used in skin care products and valued for its soothing properties

Word Origin for allantoin

C19: from allantois
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
FEEDBACK