polyvalent vs multivalent

polyvalent and multivalent both are adjectives.

Word	Noun	Adjective	Verb	Adverb
polyvalent	No	Yes	No	No
multivalent	No	Yes	No	No

As adjectives, polyvalent and multivalent are synonyms defined as:

polyvalent and multivalent: having more than one valence, or having a valence of 3 or higher

polyvalent (adjective)	multivalent (adjective)
having more than one valence, or having a valence of 3 or higher	used of the association of three or more homologous chromosomes during the first division of meiosis
containing several antibodies each capable of counteracting a specific antigen	having more than one valence, or having a valence of 3 or higher
	having many values, meanings, or appeals