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nounan independent federal agency that provides mail processing and delivery service for individuals and businesses in the United Statestype of:
Definition that contains usps
- tricuspid having three cusps or points (especially a molar tooth)
- bicuspid a tooth having two cusps or points; located between the incisors and the molars
- bicuspid having two cusps or points (especially a molar tooth)
- premolar a tooth having two cusps or points; located between the incisors and the molars
- bicuspid valve valve with two cusps; situated between the left atrium and the left ventricle
- mitral valve valve with two cusps; situated between the left atrium and the left ventricle
- cuspated having cusps or points
- cusped having cusps or points
- tricuspid valve valve with three cusps; situated between the right atrium and the right ventricle; allows blood to pass from atrium to ventricle and closes to prevent backflow when the ventricle contracts
- right atrioventricular valve valve with three cusps; situated between the right atrium and the right ventricle; allows blood to pass from atrium to ventricle and closes to prevent backflow when the ventricle contracts