pentavalent

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pen·ta·va·lent

 (pĕn′tə-vā′lənt)
adj.
1. Chemistry Having valence 5.
2. Immunology
a. Having five sites of attachment. Used of an antibody or antigen.
b. Containing antigens from five strains of a microorganism or virus. Used of a vaccine or serum.

pentavalent

(ˌpɛntəˈveɪlənt)
adj
(Chemistry) chem having a valency of five. Also: quinquevalent

pen•ta•va•lent

(ˌpɛn təˈveɪ lənt, pɛnˈtæv ə-)

adj.
1. having a valence of five: pentavalent arsenic.
[1870–75]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.pentavalent - having a valence of five
chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions