Adj. | 1. | bivalent - having a valence of two or having two valences chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions |
2. | ![]() genetic science, genetics - the branch of biology that studies heredity and variation in organisms multivalent - used of the association of three or more homologous chromosomes during the first division of meiosis univalent - used of a chromosome that is not paired or united with its homologous chromosome during synapsis; "a univalent chromosome" |