| a. | 1. | (Chem.) Having a valence greater than one, as silicon. |
| 2. | (Immunology) Having multiple antigen-binding sites; - of antibody molecules. | |
| 3. | (Immunology) Containing several types of antibody, to protect against more than one disease; polyvalent; - of vaccines. |
| Adj. | 1. | multivalent - used of the association of three or more homologous chromosomes during the first division of meiosis |
| 2. | multivalent - having more than one valence, or having a valence of 3 or higher Synonyms: polyvalent | |
| 3. | multivalent - having many values, meanings, or appeals; "subtle, multivalent allegory" Synonyms: multi-valued |