allergen
any substance, often a protein, that induces an allergy: common allergens include pollen, grasses, dust, and some medications.
Origin of allergen
1Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use allergen in a sentence
The particular bacteria that happened to be helpful just happened to be associated with those three allergens.
More Germs, Less Asthma? Study Shows Babies Exposed to Bacteria and Dander at Less Risk | Brandy Zadrozny | June 6, 2014 | THE DAILY BEAST
British Dictionary definitions for allergen
/ (ˈæləˌdʒɛn) /
any substance capable of inducing an allergy
Derived forms of allergen
- allergenic, adjective
- allergenicity, noun
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
Scientific definitions for allergen
[ ăl′ər-jən ]
A substance, such as pollen, that causes an allergic reaction.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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