16-letter words containing c, o, p, l
- optical computer — an experimental computer that uses photons rather than electrical impulses to process data a thousand times faster than with conventional integrated circuits.
- optical illusion — something that deceives by producing a false or misleading impression of reality.
- optical rotation — the angle at which the plane of polarized light is rotated when passed through an optically active substance.
- optical scanning — the process of interpreting data in printed, handwritten, bar-code, or other visual form by a device (optical scanner or reader) that scans and identifies the data.
- optical tweezers — a laser device used to study, manipulate, or trap a microscopic object, as a microorganism or cell, with nanometer precision.
- organ-pipe coral — an alcyonarian coral of the genus Tubipora, occurring in tropical waters, and forming a complex colony of brick-red, vertical tubules joined at intervals by transverse plates.
- organoleptically — In an organoleptic manner.
- orographic cloud — any cloud whose existence and form are largely controlled by the disturbed flow of air over and around mountains, as the banner cloud and crest cloud.
- orthographically — In an orthographical manner; using proper spelling, capitalization and grammar.
- osculating plane — the plane containing the circle of curvature of a point on a given curve.
- over-application — the act of putting to a special use or purpose: the application of common sense to a problem.
- over-speculation — the contemplation or consideration of some subject: to engage in speculation on humanity's ultimate destiny.
- overcapitalizing — Present participle of overcapitalize.
- overcomplicating — Present participle of overcomplicate.
- palaeolithic man — any of various primitive types of man, such as Neanderthal man and Java man, who lived in the Palaeolithic
- paleoclimatology — the branch of paleogeography dealing with the study of paleoclimates.
- palmitoleic acid — a colorless, unsaturated fatty acid, C 1 6 H 3 0 O 2 , occurring in oils and fats of plants and animals.
- palmtop computer — a computer that has a small screen and compressed keyboard and is small enough to be held in the hand, often used as a personal organizer
- panel discussion — a formal discussion before an audience for which the topic, speakers, etc., have been selected in advance.
- paratuberculosis — Johne's disease.
- parochial school — a primary or secondary private school supervised by a religious organization, especially a Roman Catholic day school affiliated with a parish or a holy order.
- parochialization — a parochial character, spirit, or tendency; excessive narrowness of interests or view; provincialism.
- partial fraction — one of the fractions into which a given fraction can be resolved, the sum of such simpler fractions being equal to the given fraction: Partial fractions of 5/(x2−x) are 5/(x−1) and −5/x.
- partial function — A function which is not defined for all arguments of its input type. E.g. f(x) = 1/x if x /= 0. The opposite of a total function. In denotational semantics, a partial function f : D -> C may be represented as a total function ft : D' -> lift(C) where D' is a superset of D and ft x = f x if x in D ft x = bottom otherwise where lift(C) = C U bottom. Bottom (LaTeX \perp) denotes "undefined".
- pascal's limacon — limaçon.
- pascal's theorem — the theorem that the lines joining adjacent vertices of a hexagon intersect the same straight line if alternate vertices lie on two intersecting straight lines.
- passport control — identity check at airport, etc.
- pavillon chinois — crescent (def 6).
- pectoralis major — the larger of the two large chest muscles that assist in movements of the shoulder and upper arm
- pectoralis minor — the smaller of the two large chest muscles that assist in movements of the shoulder and upper arm
- pelagic division — the biogeographic realm or zone that comprises the open seas and oceans, including water of all depths.
- pelican crossing — place to cross road
- pentatonic scale — a scale having five tones to an octave, as one having intervals that correspond to the five black keys of a piano octave.
- people's charter — the principles or movement of a party of political reformers, chiefly workingmen, in England from 1838 to 1848: so called from the document (People's Charter or National Charter) that contained a statement of their principles and demands.
- people's commune — a usually rural, Communist Chinese social and administrative unit of from 2000 to 4000 families combined for collective farming, fishing, mining, or industrial projects.
- perchloromethane — carbon tetrachloride.
- percussion drill — a drill that is operated by percussion
- peregrine falcon — a globally distributed falcon, Falco peregrinus, much used in falconry because of its swift flight: several subspecies are endangered.
- perforated ulcer — an ulcer that bursts through the stomach wall and leaks food and gastric juices into the abdominal cavity
- periodic decimal — repeating decimal.
- person of colour — a person who is not White
- personal effects — belongings
- personality cult — deliberately cultivated adulation of a person, esp a political leader
- personnel agency — an agency for placing employable persons in jobs; employment agency.
- peter pan collar — a close-fitting flat or rolled collar with rounded ends that meet in front of a high, round neckline.
- phantasmagorical — having a fantastic or deceptive appearance, as something in a dream or created by the imagination.
- phenomenological — the study of phenomena.
- philanthropistic — a person who practices philanthropy.
- photocoagulation — a surgical technique using an intense beam of light from a laser or a xenon-arc bulb to seal blood vessels or coagulate tissue, used primarily in ophthalmology to repair detached retinas or to treat certain kinds of retinopathy.
- photoelectricity — electricity induced by electromagnetic radiation, as in certain processes, as the photoelectric and photovoltaic effects, photoconductivity, and photoionization.