al·ler·gen ( l  r-jn)n. A substance, such as pollen, that causes an allergy. [German Allergen : Aller(gie), allergy; see allergy + -gen, -gen (from French -gène; see -gen).] al  ler·genic (-j n k) adj. |
allergen [al-ler-jen]
Noun
a substance capable of causing an allergic reaction
allergenic adj
| allergen (lr-jn) A substance, such as pollen, that causes an allergic reaction. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. | allergen - any substance that can cause an allergy substance - a particular kind or species of matter with uniform properties; "shigella is one of the most toxic substances known to man" ragweed pollen - pollen of the ragweed plant is a common allergen |
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