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

• swampinesses
• swamping
• swampland
• swamplands
• swamp oak
• swamp oaks
• swamps
• swampy
• swan
• swan about
• swan around
• swan dive
• swan dives
• Swanee whistle
• swang
• swan-geese
• swan-goose
• swanherd
• swanherds
• swan-hopping
• swan in
• swank
• swanked
• swanker
• swankers