two-party
adjective
two-par·ty ˈtü-ˈpär-tē 
: characterized by two major political parties of comparable strength
Word History
First Known Use
1923, in the meaning defined above
- pterostylisses
- pterotheca
- pterothorax
- pterotic
- pteroyl
- pteroylglutamic acid
- pteroylmonoglutamic acid
- pteryg-
- pterygia
- pterygial
- pterygiophore
- pterygium
- pterygiums
- pterygo-
- pterygobranchiate
- pterygoda
- pterygode
- pterygodum
- Pterygogenea
- pterygoid
- pterygoid artery
- pterygoid bone
- pterygoid process
- pterygoid ridge
- pterygoids