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

• retract
• retractable
• retractation
• retractations
• retracted
• retractible
• retractile
• retractilities
• retractility
• retracting
• retraction
• retractions
• retractive
• retractively
• retractor
• retractors
• retracts
• retraict
• retrain
• retrained
• retraining
• retrains
• retrait
• retraite
• retraitt