Equivalent in incorporating or displacing power to two atoms of hydrogen dyad
- having a valence of two or having two valences
- utilized of homologous chromosomes linked in pairs in synapsis
- Equivalent in incorporating or displacing capacity to two atoms of hydrogen; dyad.
1864, of chemical compounds, 1899, of chromosomes, from bi- + -valent, from Latin valentem, present participle of valere "be well worth" (see valiant).
(p. pr.) Equivalent in incorporating or displacing power to two atoms of hydrogen; dyad.
It is chemically related to cadmium and mercury, the resemblance to cadmium being especially well marked; one distinction is that zinc is less basigenic. Zinc is capable of isomorphously replacing many of the bivalent metals - magnesium, manganese, iron, nickel, cobalt and cadmium.