1. (mathematics and logic) if and only if

Encyclopedia: Iff

• court tennis
• court-martial
• court-ordered
• Courtelle
• courteous
• courteously
• courteousness
• courtesan
• courtesy
• courthouse
• courtier
• courting
• courtliness
• courtly
• courtly love
• courtroom
• courtship
• courtyard
• couscous
• cousin
• cousin brother
• cousin sister
• cousin-german
• cousinhood
• cousinly