15-letter words containing p, a, t, r, i, l
- battleship gray — a subdued bluish gray.
- bias (ply) tire — a motor vehicle tire having a foundation of plies of rubberized cords in a crisscross pattern of lines diagonal to the center line of the tread
- black operation — a covert and undocumented military operation
- blasting powder — a form of gunpowder made with sodium nitrate instead of saltpeter, used chiefly for blasting rock, ore, etc.
- braille printer — (printer) (Or "(Braille) embosser") A printer, necessarily an impact printer, that renders text as Braille. Blind users call other printers ink printers.
- buryat republic — a constituent republic of SE central Russia, on Lake Baikal: mountainous, with forests covering over half the total area. Capital: Ulan-Ude. Pop: 981 000 (2002). Area: 351 300 sq km (135 608 sq miles)
- calf diphtheria — a disease of the throat in young calves caused by Fusobacterium necrophorum, resulting in breathing difficulty and a painful cough
- calliper splint — a splint consisting of two metal rods with straps attached, for supporting or exerting tension on the leg
- camphorated oil — a liniment consisting of camphor and peanut oil, used as a counterirritant
- capillarization — The formation and development of a network of capillaries to a part of the body; it is increased by aerobic exercise.
- capital gearing — the ratio of a company's debt capital to its equity capital
- capital letters — a letter of the alphabet that usually differs from its corresponding lowercase letter in form and height, as A, B, Q, and R as distinguished from a, b, q, and r : used as the initial letter of a proper name, the first word of a sentence, etc.
- capital surplus — any surplus of a business firm not derived from direct earnings or profits
- cardinal points — the four main points of the compass: north, south, east, and west
- caribbean plate — a major tectonic division of the earth's crust, encompassing the Central American portion of North America, the Caribbean Sea, and the islands of Cuba, Jamaica, Hispaniola, and Puerto Rico, as well as the Leeward and Windward Islands; bordered north and south by the North and South American Plates and west by the Cocos Plate.
- carpentersville — a city in NE Illinois, near Chicago.
- cartesian plane — Usually, Cartesian coordinates. a member of a system of coordinates for locating a point on a plane (Cartesian plane) by its distance from each of two intersecting lines, or in space by its distance from each of three planes intersecting at a point.
- cast-iron plant — any of several plants belonging to the genus Aspidistra, of the lily family, native to eastern Asia, especially A. eliator, having large evergreen leaves often striped with white, and grown as a houseplant.
- cephalothoracic — the anterior part of the body in certain arachnids and crustaceans, consisting of the coalesced head and thorax.
- chartophylacium — (in a medieval church) a place for the keeping of records and documents.
- chile saltpeter — sodium nitrate, esp. as found naturally in Chile and Peru
- chile saltpetre — a naturally occurring form of sodium nitrate: a soluble white or colourless mineral occurring in arid regions, esp in Chile and Peru
- christadelphian — a member of a Christian millenarian sect founded in the US about 1848, holding that only the just will enter eternal life, that the wicked will be annihilated, and that the ignorant, the unconverted, and infants will not be raised from the dead
- chromium-plated — having been plated with chromium
- chryse planitia — a plain on Mars, the landing site of the Viking I spacecraft.
- class president — the student president of a school or college class
- claustrophobics — Plural form of claustrophobic.
- cleptoparasites — Plural form of cleptoparasite.
- colourpoint cat — a cat with increased pigmentation of cooler points of the body, such as ears, feet, tail, nose, and scrotum (in males)
- complementaries — forming a complement; completing.
- complementarily — In a complementary manner.
- complementarity — a state or system that involves complementary components
- complimentaries — of the nature of, conveying, or expressing a compliment, often one that is politely flattering: a complimentary remark.
- complimentarily — of the nature of, conveying, or expressing a compliment, often one that is politely flattering: a complimentary remark.
- credibility gap — A credibility gap is the difference between what a person says or promises and what they actually think or do.
- critical period — a period in a lifetime during which a specific stage of development usually occurs. If it fails to do so, it cannot readily occur afterwards
- cross-pollinate — to subject or be subjected to cross-pollination
- crossing patrol — a person who holds up the traffic so that school children can cross the road safely
- cryptographical — the science or study of the techniques of secret writing, especially code and cipher systems, methods, and the like. Compare cryptanalysis (def 2).
- crystal pick-up — a record-player pick-up in which the current is generated by the deformation of a piezoelectric crystal caused by the movements of the stylus
- decipherability — to make out the meaning of (poor or partially obliterated writing, etc.): to decipher a hastily scribbled note.
- departmentalism — division into departments, esp when resulting in impaired efficiency
- departmentalize — to organize into departments, esp excessively
- depletion layer — a region at the interface between dissimilar zones of conductivity in a semiconductor, in which there are few charge carriers
- dermatoglyphics — the lines forming a skin pattern, esp on the palms of the hands and soles of the feet
- diaheliotropism — the tendency among plants to respond to the light of the sun by orienting their leaves perpendicular to the sun's rays, such that the upper surface of the leaves receives maximum light
- diastrophically — in a diastrophic fashion
- disproportional — not in proportion; disproportionate.
- disreputability — The state of being disreputable.
- edriophthalmian — edriophthalmous