Английский разговорный словарь (основной) - bivalent
Bivalent
bivalent
ˈbaɪˌveɪlənt adj. & n. --adj. 1 Chem. having a valency of two. 2 Biol. (of homologous chromosomes) associated in pairs. --n. Biol. anypair of homologous chromosomes. øøbivalency n. [BI+ valentpres. part. stem formed as VALENCE(1)]