WordWeb Online

1. (genetics) used of the association of three or more homologous chromosomes during the first division of meiosis
    
2. (chemistry) having more than one valence, or having a valence of 3 or higher
   - polyvalent
    
3. Having many values, meanings, or appeals
   "subtle, multivalent allegory";
   - multi-valued

See also: ambiguous, valence, valency

Antonym: bivalent, univalent

Encyclopedia: Multivalent