allergen

play
noun al·ler·gen \ˈa-lər-jən\

Definition of allergen

  1. :  a substance (as pollen) that induces allergy

allergenic

play \ˌa-lər-ˈje-nik\ adjective

allergenicity

play \ˌa-lər-jə-ˈni-sə-tē\ noun

Examples of allergen in a sentence

  1. common allergens, such as pollen

Origin and Etymology of allergen

International Scientific Vocabulary allergy + -gen


First Known Use: 1910


ALLERGEN Defined for English Language Learners

allergen

play
noun al·ler·gen \ˈa-lər-jən\

Definition of allergen for English Language Learners

  • medical : a substance that causes an allergy


ALLERGEN Defined for Kids

allergen

play
noun al·ler·gen \ˈa-lər-jən\

Definition of allergen for Students

  1. :  a substance that causes an allergic reaction


Medical Dictionary

allergen

play
noun al·ler·gen \ˈal-ər-jən\

Medical Definition of allergen

  1. :  a substance that induces allergy <inhaled allergens> <a suspected food allergen>



Seen and Heard

What made you want to look up allergen? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a Mesopotamian temple tower

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

  • alphabet-magnets
  • Which is the correct spelling?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ