bivalent /bī-vāˈlənt or bivˈə-lənt/

1. Having a valency of two (chem)
2. Relating to one of a pair of homologous chromosomes (also noun)

bivalence or bivalency noun

• plain language
• plain loaf
• plain loaves
• plainly
• plainness
• plainnesses
• plains
• Plains
• plain sailing
• Plains Indian
• Plains Indians
• plainsman
• plainsmen
• plainsong
• plainsongs
• plain speaking
• plain-spoken
• plainstanes
• plainstones
• plaint
• plain text
• plaintful
• plaintiff
• plaintiffs
• plaintive