• (a.) Multivalent.
having more than one valence.
<chemistry> Having more than one valence. ... (18 Nov 1997) ... 
(pol″e-va´lәnt) multivalent; having more than one valence.
Po·lyv'a·lent adjective [ Poly- + Latin valens , present participle See Valent .] (Chemistry) Multivalent. 
having titer against more than one type, as in Polyvalent Antivenin. Antivenin that is effective against the venoms of more than one species.
Type: Term Pronunciation: pol′ē-vā′lent Definitions: 1. Pertaining to a polyvalent antiserum. Synonyms: multivalent
[adj] - (immunology) containing several antibodies each capable of counteracting a specific antigen 2. [adj] - (chemistry) having more than one valence, or having a valence of 3 or higher
adj. applied to antivenom, acting against multiple venom types [c.f. monovalent]
A vaccine containing several antigens (multivalent).