I. adjective Date: 1869 divalent , associated in pairs in synapsis, II. noun Date: circa 1934 a pair of synaptic chromosomes
BIVALENT
Meaning of BIVALENT in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012