17-letter words containing p, o, l, t, r
- micropaleontology — the branch of paleontology dealing with the study of microscopic fossils.
- modern pentathlon — an athletic contest consisting of five different events: horse riding with jumps, fencing with electric épée, freestyle swimming, pistol shooting, and cross-country running
- mother spleenwort — a fern, Asplenium bulbiferum, of tropical Africa and Australasia, the fronds often bearing bulbils that sprout into new plants while still attached, grown as an ornamental.
- multiple cropping — the use of the same field for two or more crops, whether of the same or of different kinds, successively during a single year.
- multiple exposure — the filming of more than one scene in a single frame
- neath port talbot — a county borough in S Wales, created from part of West Glamorgan in 1996. Administrative centre: Port Talbot. Pop: 135 300 (2003 est). Area: 439 sq km (169 sq miles)
- negative polarity — the grammatical character of a word or phrase, such as ever or any, that may normally be used only in a semantically or syntactically negative or interrogative context
- nephelometrically — By means of nephelometry.
- neuropathological — (medicine) Of, pertaining to, or arising from neuropathology, the pathology of nerve tissue.
- neurophysiologist — the branch of physiology dealing with the functions of the nervous system.
- neuropsychologist — A neurologist or psychologist whose speciality is neuropsychology.
- non-proliferation — Non-proliferation is the limiting of the production and spread of something such as nuclear or chemical weapons.
- non-stereotypical — a process, now often replaced by more advanced methods, for making metal printing plates by taking a mold of composed type or the like in papier-mâché or other material and then taking from this mold a cast in type metal.
- non-thermoplastic — soft and pliable when heated, as some plastics, without any change of the inherent properties.
- not spare oneself — to exert oneself to the full
- oil of turpentine — a colorless, flammable, volatile essential oil having a penetrating odor and a pungent, bitter taste, obtained from turpentine oleoresin by distillation: used in paints and varnishes, and in medicine as a carminative, vermifuge, expectorant, rubefacient, and, formerly, as a diuretic.
- old spanish trail — an overland route from Santa Fe, N. Mex., to Los Angeles, Calif., first marked out in 1776 by Spanish explorers and missionaries.
- omphalomesenteric — (anatomy) Of or pertaining to the umbilicus and mesentery.
- one-parent family — A one-parent family is a family that consists of one parent and his or her children living together.
- operation sealion — the codename for Hitler's proposed invasion (1940) of Great Britain
- opportunistically — adhering to a policy of opportunism; practicing opportunism.
- optical astronomy — the branch of observational astronomy using telescopes to observe or photograph celestial objects in visible light.
- optical carrier 3 — (networking) (OC-3) A SONET rate of 3 * 51.84 = 155.52 megabits per second, which matches STS-3.
- optical carrier n — (networking) (OC-n) A SONET rate of n times 51.84 megabits per second.
- optical isomerism — stereoisomerism in which the isomers are identical in molecular weight and most chemical and physical properties but differ in their effect on the rotation of polarized light.
- ortho-nitrophenol — any compound derived from phenol by the replacement of one or more of its ring hydrogen atoms by the nitro group.
- pair annihilation — Physics. annihilation (def 3a).
- palace revolution — a challenge to or overthrow of a sovereign or other leader by members of the ruling family or group.
- paleoanthropology — the study of the origins and predecessors of the present human species, using fossils and other remains.
- paleobiochemistry — the study of biochemical processes that occurred in fossil life forms.
- paleoconservative — a person advocating an older, traditional type of conservatism, especially in politics.
- palette of narmer — a king of Egypt identified by modern scholars as the Menes of tradition and depicted as the unifier of Upper and Lower Egypt on an ancient slate tablet (Narmer Palette or Palette of Narmer) c3200 b.c. with relief carvings on both sides.
- parallel computer — parallel processor
- parathyroid gland — any of several small oval glands usually lying near or embedded in the thyroid gland.
- particle velocity — the velocity of a point in a medium that is undergoing wave motion.
- particularization — to make particular.
- parts per million — the number of units (of a substance) present in a million units of another substance
- pastoral symphony — the Symphony No. 6 in F major (1807–08) by Ludwig van Beethoven.
- pastoral theology — the branch of theology dealing with the responsibilities of members of the clergy to the people under their care.
- pathological liar — a person who tells lies frequently, with no rational motive for doing so.
- patriarchal cross — a Latin cross having a shorter crosspiece above the customary one.
- peacock butterfly — a European nymphalid butterfly, Inachis io, having reddish-brown wings each marked with a purple eyespot
- peer of the realm — any of a class of peers in Great Britain and Ireland entitled by heredity to sit in the House of Lords.
- pentachlorophenol — a white, crystalline, water-insoluble powder, C 6 Cl 5 OH, used chiefly in fungicides, disinfectants, and wood preservatives.
- pentylenetetrazol — a white, crystalline, bitter-tasting, water-soluble powder, C 6 H 1 0 N 4 , used as a respiratory and circulatory stimulant, especially in the treatment of barbiturate poisoning, and to induce a convulsive state in the treatment of certain mental diseases.
- perchloroethylene — tetrachloroethylene.
- percussion bullet — a bullet that is exploded by percussion
- peridot of ceylon — a honey-colored tourmaline, used as a gem: not a true peridot.
- period-revolution — a rather large interval of time that is meaningful in the life of a person, in history, etc., because of its particular characteristics: a period of illness; a period of great profitability for a company; a period of social unrest in Germany.
- personal computer — a compact computer that uses a microprocessor and is designed for individual use, as by a person in an office or at home or school, for such applications as word processing, data management, financial analysis, or computer games. Abbreviation: PC.