bittersweet
- n poisonous perennial Old World vine having violet flowers and oval coral-red berries; widespread weed in North America
- n twining shrub of North America having yellow capsules enclosing scarlet seeds
- s tinged with sadness
a movie with a bittersweet ending - s having a taste that is a mixture of bitterness and sweetness
bivalent
- a having a valence of two or having two valences
- a used of homologous chromosomes associated in pairs in synapsis
bivalve
- n marine or freshwater mollusks having a soft body with platelike gills enclosed within two shells hinged together
- a used of mollusks having two shells (as clams etc.)