18-letter words containing i, n, p, r, o

sling psychrometer — a psychrometer so designed that the wet-bulb thermometer can be ventilated, to expedite evaporation, by whirling in the air.
slow-motion replay — a showing again in slow motion of a sequence of action, esp of part of a sporting contest immediately after it happens
solitary sandpiper — a North American sandpiper, Tringa solitaria, of inland wetlands, having a brownish-gray, white-spotted back and whitish underparts.
something to spare — a surplus of something
sonic depth finder — a sonar instrument that uses echolocation to measure depths under water.
speech recognition — Computers. the computerized analysis of spoken words in order to identify the speaker, as in security systems, or to respond to voiced commands: the analysis is performed by finding patterns in the spectrum of the incoming sound and comparing them with stored patterns of elements of sound, as phones, or of complete words.
sperry corporation — (company) The company which merged with the Burroughs Corporation to form Unisys Corporation. Divisions included Sperry Univac, Sperry Flight Systems, and others. Some of these were sold off after the merger.
spirits of ammonia — a 10% solution of ammonia in alcohol
spread one's wings — to make full use of one's abilities
subsidiary company — a company whose controlling interest is owned by another company.
summary proceeding — a mode of trial authorized by statute to be held before a judge without the usual full hearing.
super giant slalom — a slalom race in which the course is longer and has more widely spaced gates than in a giant slalom.
superior vena cava — See under vena cava.
superstring theory — any supersymmetric string theory in which each type of elementary particle is treated as a vibration of a single fundamental string (superstring) at a particular frequency.
supporting actress — an actress playing a supporting role
sustaining program — a radio or television program without a commercial sponsor.
system-programming — a program, as an operating system, compiler, or utility program, that controls some aspect of the operation of a computer (opposed to application program).
telephone receiver — a device, as in a telephone, that converts changes in an electric current into sound.
temporal summation — the act or process of summing.
thought experiment — Physics. a demonstration or calculation that is based on the postulates of a theory, as relativity, and that demonstrates or clarifies the consequences of the postulates.
to cast aspersions — If you cast aspersions on someone or something, you suggest that they are not very good in some way.
to scrape a living — If you say that someone scrapes a living or scratches a living, you mean that they manage to earn enough to live on, but it is very difficult. In American English, you say they scrape out a living or scratch out a living.
to speak your mind — If you speak your mind, you say firmly and honestly what you think about a situation, even if this may offend or upset people.
torsion-free group — a group in which every element other than the identity has infinite order.
traditional option — an option that once purchased cannot be resold
traditional policy — a life assurance policy in which the policyholder's premiums are paid into a general fund and his or her investment benefits are calculated according to actuarial formulae
traditional weapon — a weapon having ceremonial tribal significance, such as an assegai or knobkerrie
transient response — A transient response of a circuit is a temporary change in the way that it behaves due to an external excitation, that will disappear with time.
transporter bridge — a bridge for carrying passengers and vehicles by means of a platform suspended from a trolley.
under-compensation — to compensate or pay less than is fair, customary, or expected.
under-depreciation — decrease in value due to wear and tear, decay, decline in price, etc.
unfair competition — acts done by a seller to confuse or deceive the public with intent to acquire a larger portion of the market, as by cutting prices below cost, misleading advertising, selling a spurious product under a false identity, etc.
unisys corporation — (company) The company formed in 1984-5 when Burroughs Corporation merged with Sperry Corporation. This was when the phrase "dinosaurs mating" was coined. Unisys is one of the largest providers of information services, technology, and software in the world. They employ about 49,000 people and do business in some 100 countries. In 1994 about 80 percent of revenue was derived from commercial information systems and services, with the remainder coming from electronic systems and services for the defense market. The defense business was sold to Loral in early 1995. Slightly more than half of Unisys's revenue is from business in the United States. They specialise in providing business-critical solutions, based on open information networks, for organisations that operate in transaction-intensive environments. These organisations include financial services companies, airlines, telecommunications companies, government agencies, and other commercial enterprises. In August 1994, quarterly sales were $1799M and profits $50M.
universal coupling — a coupling between rotating shafts set at an angle to one another, allowing for rotation in three planes.
up to one's tricks — If you say that someone is up to their tricks or up to their old tricks, you disapprove of them because they are behaving in the dishonest or deceitful way in which they typically behave.
upper partial tone — overtone (def 1).
vermiform appendix — a narrow, blind tube protruding from the cecum, having no known useful function, in humans being 3 to 4 inches (8 to 10 cm) long and situated in the lower right-hand part of the abdomen.
vigoureux printing — a printing method in which worsted fibers are printed with the desired color while in sliver form and then processed into yarn, producing a mixed color in the spun yarn and woven fabric.
visiting professor — a professor from another institution invited to teach at a university or college for a limited period, usually for a semester or one academic year.
western isles pony — a breed of large pony, typically grey, with a dense waterproof coat. The only surviving variety is the Eriskay pony
white iron pyrites — marcasite
wild passionflower — the maypop, Passiflora incarnata.
wilson's phalarope — a phalarope, Phalaropus tricolor, that breeds in the prairie regions of North America and winters in Argentina and Chile.
wireless telephone — Now Rare. radiotelephony.
wireless telephony — Now Rare. radiotelephony.
women at point sur — a narrative poem (1927) by Robinson Jeffers.
working hypothesis — See under hypothesis (def 1).
world championship — an international competition in a particular sport or activity for people all around the world
zion national park — a park in SW Utah. 148 sq. mi. (383 sq. km).

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