18-letter words containing p, a, r, m
- september massacre — (in the French Revolution) the massacre of royalists and other inmates of the prisons of Paris, September 2–6, 1792.
- service department — a repair shop
- simple enumeration — a procedure for arriving at empirical generalizations by haphazard accumulation of positive instances.
- 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
- small pastern bone — the part of the foot of a horse, cow, etc., between the fetlock and the hoof.
- soda-lime feldspar — plagioclase.
- sodium-vapour lamp — a type of electric lamp consisting of a glass tube containing neon and sodium vapour at low pressure through which an electric current is passed to give an orange light. They are used in street lighting
- something to spare — a surplus of something
- specimen signature — a signature to be compared to an original signature in order to verify someone's identity
- spectropolarimeter — an instrument for determining the extent to which plane-polarized light of various wavelengths is rotated by certain solutions, consisting of a combination of a spectroscope and a polarimeter.
- spherical geometry — the branch of geometry that deals with figures on spherical surfaces.
- spirits of ammonia — a 10% solution of ammonia in alcohol
- subatomic particle — physics:
- 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.
- surveyor's compass — an instrument used by surveyors for measuring azimuths.
- sustaining program — a radio or television program without a commercial sponsor.
- swartkrans ape-man — the fossil remains of the extinct hominid Australopithecus robustus, found at Swartkrans, Republic of South Africa: formerly classified in the genus Paranthropus.
- sympathetic strike — sympathy strike.
- sympathetic string — a thin wire string, as in various obsolete musical instruments, designed to vibrate sympathetically with the bowed or plucked strings to reinforce the sound.
- symphony orchestra — a large orchestra composed of wind, string, and percussion instruments and organized to perform symphonic compositions.
- 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).
- systems programmer — a person whose job is to program systems software
- temporal summation — the act or process of summing.
- temporary hardness — hardness of water due to the presence of magnesium and calcium hydrogencarbonates, which can be precipitated as carbonates by boiling
- the lords temporal — (in Britain) peers other than bishops in their capacity as members of the House of Lords
- thiruvananthapuram — a state in SW India: formerly the regions of Travancore and Cochin. 15,005 sq. mi. (38,836 sq. km). Capital: Thiruvananthapuram.
- 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.
- under-compensation — to compensate or pay less than is fair, customary, or expected.
- 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.
- upper klamath lake — See under Klamath Lakes.
- upper middle class — wealthy, highly-educated people
- urban contemporary — popular dance music incorporating elements of rap, rhythm-and-blues, funk, and soul.
- 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.
- wildlife programme — (esp on television) a documentary whose subject is wild animals in their natural habitat or undomesticated fauna and flora generally
- withdrawal symptom — effects of stopping a drug
- women at point sur — a narrative poem (1927) by Robinson Jeffers.
- work-study program — a program enabling high-school or college students to combine academic work with actual job experience.
- world championship — an international competition in a particular sport or activity for people all around the world
- x-ray spectrometer — a spectrometer using x-rays to activate the inner electrons of an atom in order to separate and identify the chemical constituents of a substance and their concentrations.
- x-ray spectrometry — the use of an x-ray spectrometer.