28-letter words containing t, r, a, p, u, n
- spectral luminous efficiency — a measure of the efficiency of radiation of a given wavelength in producing a visual sensation. It is equal to the ratio of the radiant flux at a standard wavelength to that at the given wavelength when the standard wavelength is chosen so that the maximum value of this ratio is unity
- standard operating procedure — a set of fixed instructions or steps for carrying out usually routine operations. Abbreviation: SOP.
- supplemental security income — income provided by the U.S. government to needy aged, blind, and disabled persons. Abbreviation: SSI.
- 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.
- to set/put sb's mind at rest — To put someone's mind at rest or set their mind at rest means to stop them worrying about something.
- turn (or put) one's hand to — to undertake; work at
- 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.
- very small aperture terminal — (communications) (VSAT) A kind of ground station used to contact a communications satellite such as INMARSAT.