Definitions

from the GNU version of the Collaborative International Dictionary of English.

  • noun any substance that produces immunity when introduced into the body.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun immunology Any substance that elicits a immune response; an antigen

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun any substance or organism that provokes an immune response (produces immunity) when introduced into the body

Etymologies

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Examples

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