28-letter words containing p, o, r, t, c, u
- tannu tuva people's republic — former name of Tuva Autonomous Republic.
- tissue plasminogen activator — an anticlotting enzyme, naturally occurring in small amounts in the blood.
- united states postal service — an independent federal agency created in 1971 to replace the Post Office Department as the division of the federal government responsible for postal services. Abbreviation: USPS.