Definition from Wiktionary, the free dictionary
- multivalent; having a number of different forms, purposes, meanings, aspects or principles.
- (chemistry) Having a high valence, especially more than three
- (chemistry) Having multiple valencies
- (biology) Containing antibodies to more than one kind of pathogen
Derived terms 
- IPA: /po.li.va.lɑ̃/
- (rare) an employee with various tasks