19-letter words containing o, u, t, c, a, p
- reactor temperature — The reactor temperature is the temperature at various stages in a reactor in an FCC unit.
- reciprocity failure — a failure of the two exposure variables, light intensity and exposure time, to behave in a reciprocal fashion at very high or very low values
- reconceptualization — to form into a concept; make a concept of.
- reduction potential — (in a galvanic cell) the potential of the electrode at which reduction occurs.
- republic of vietnam — the name (from 1955–75) for South Vietnam, as an independent republic, following the division of the country in 1954 into North Vietnam and South Vietnam
- reserved occupation — in time of war, an occupation from which one will not be called up for military service
- san juan capistrano — a city in SW California: site of old Spanish mission; known for annual return of swallows, said to occur on March 19.
- sexual reproduction — reproduction involving the union of gametes.
- south pacific ocean — the part of the Pacific Ocean extending S from the Equator to the Antarctic continent.
- southern crab apple — a tree, Malus angustifolia, of the eastern U.S., having oblong leaves, fragrant, pink or rose-colored flowers, and small, round, yellow-green fruit.
- specular reflection — Specular reflection is reflection of heat or light in which the angles of different parts of the surface are important.
- speculative fiction — a broad literary genre encompassing any fiction with supernatural, fantastical, or futuristic elements
- stationery cupboard — a cupboard where things like paper, pens and paper clips are kept
- subtractive process — a process of color photography in which the colors are formed by combination of cyan, yellow, and magenta lights.
- teacher-pupil ratio — the number of teachers relative to the number of pupils in a particular school
- tehachapi mountains — a transverse (E–W) mountain range in S central California. Highest peak, Double Mountain, 7982 feet (2433 meters).
- telescopic umbrella — an umbrella having parts that telescope
- the compassion club — (in Canada) a nonprofit organization that provides uncontaminated cannabis for medical purposes and natural therapies in a safe environment
- theatrical producer — a person who is responsible for all aspects of a theatrical production
- therapeutic cloning — the permitted creation of cloned human tissues for surgical transplant
- tuamotu archipelago — a group of about 80 coral islands in the S Pacific, in French Polynesia. Pop: 15 973 (2002; including the Gambier Islands). Area: 860 sq km (332 sq miles)
- tussock caterpillar — the larva of a tussock moth.
- vapor recovery unit — A vapor recovery unit is a system for recovering vapors from inside sealed crude oil or condensate tanks, with a scrubber (= a device for removing unwanted substances) and compressor (= a device that raises pressure).