Definition of polyvalent
1 : having a chemical valence greater usually than two
2 : effective against, sensitive toward, or counteracting more than one toxin, microorganism, or antigen <polyvalent vaccines>
Origin of polyvalent
International Scientific Vocabulary
First Known Use: 1881
Medical Definition of polyvalent
1a: having a chemical valence greater usually than twob: having variable valence
2: effective against, sensitive toward, or counteracting more than one exciting agent (as a toxin or antigen) <a polyvalent vaccine>
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Medical Dictionary: Definition of "polyvalent"
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