18-letter words containing a, c, p, u, l
- independent clause — a clause that can stand alone as a sentence, containing a subject and a predicate with a finite verb, as I was there in the sentence I was there when he arrived.
- jack-in-the-pulpit — A North American plant, Arisaema triphyllum, of the arum family, having an upright spadix arched over by a green or striped purplish-brown spathe.
- juan ponce de leon — Juan [hwahn] /ʰwɑn/ (Show IPA), c1460–1521, Spanish explorer.
- krause's corpuscle — any of numerous encapsulated nerve endings occurring in the skin and mucous membranes, functioning as sensory cold receptors.
- lenticular process — a method for producing images with a three-dimensional effect by photographing on lenticulated film.
- louisiana purchase — a treaty signed with France in 1803 by which the U.S. purchased for $15,000,000 the land extending from the Mississippi River to the Rocky Mountains and from Canada to the Gulf of Mexico.
- maksutov telescope — a reflecting telescope in which coma and spherical aberration are reduced to a minimum by a combination of a spherical mirror and a meniscus lens placed inside the radius of curvature of the mirror.
- mercury-vapor lamp — a lamp producing a light with a high actinic and ultraviolet content by means of an electric arc in mercury vapor.
- mergui archipelago — a group of over 200 islands in the Andaman Sea, off the Tenasserim coast of S Myanmar: mountainous and forested
- microencapsulation — the process of enclosing chemical substances in microcapsules.
- molecular spectrum — the spectrum of light emitted or absorbed by a species of molecule.
- mordovian republic — a constituent republic of W central Russia, in the middle Volga basin. Capital: Saransk. Pop: 888 700 (2002). Area: 26 200 sq km (10 110 sq miles)
- mucopolysaccharide — (formerly) glycosaminoglycan.
- muscular dystrophy — a hereditary disease characterized by gradual wasting of the muscles with replacement by scar tissue and fat, sometimes also affecting the heart.
- neurophysiological — the branch of physiology dealing with the functions of the nervous system.
- neuropsychological — Of or pertaining to neuropsychology, the relation or combination of brain and mind.
- nuclear capability — If a country has nuclear capability, it is able to produce nuclear power and usually nuclear weapons.
- numerical aperture — a measure of the resolving power of a microscope, equal to the index of refraction of the medium in which the object is placed multiplied by the sine of the angle made with the axis by the most oblique ray entering the instrument, the resolving power increasing as the product increases. Abbreviation: N.A.
- occupational group — An occupational group is a category used by insurance companies to classify jobs according to how hazardous they are.
- oedipus at colonus — a tragedy by Sophocles, written toward the end of his life and produced posthumously in 401? b.c.
- on automatic pilot — If you are on automatic pilot or on autopilot, you are acting without thinking about what you are doing, usually because you have done it many times before.
- optical soundtrack — the final soundtrack on a motion picture, which appears as a band of black and white serrations along a strip of film to the left of the composite print. Light is shined through the serrations and is converted to audible sound.
- pacinian corpuscle — (sometimes lowercase) a microscopic, onionlike body consisting of layers of connective tissue wrapped around a nerve ending, located in the deep layers of skin, tendons, etc., and functioning as a sensory receptor of pressure and vibration.
- parallel computing — parallel processing
- parallel reduction — A form of applicative order reduction in which all redexes in an expression are reduced simultaneously. Variants include parallel outermost reduction and lenient reduction. See normal order reduction.
- particular average — a loss at sea, as through accident or negligence, that is borne solely by the owner of the lost property. Abbreviation: P.A.
- particulate filter — A particulate filter is a filter to remove particles that are present the air, for example in the exhaust of a diesel engine.
- particulate matter — Particulate matter is solid or liquid particles in the air, which are measured in PM-10 units and are particles with a diameter of ten micrometers or less.
- passive vocabulary — all the words, collectively, that a person can understand
- pennsylvania dutch — the descendants of 17th- and 18th-century settlers in Pennsylvania from southwest Germany and Switzerland.
- perceptual defence — the process by which it is thought that certain stimuli are either not perceived or are distorted due to their offensive, unpleasant, or threatening nature
- perceptual mapping — the use of a graph or map in the development of a new product, in which the proximity of consumers' images of the new product to those of an ideal product provide an indication of the new product's likely success
- percussion flaking — a method of forming a flint tool by striking flakes from a stone core with another stone or a piece of bone or wood.
- perlocutionary act — the action of affecting someone by uttering certain words
- perpetual calendar — a calendar devised to be used for many years, as in determining the day of the week on which a given date falls.
- personal insurance — insurance on personal risk, such as car insurance, health insurance or loss of earnings insurance
- physical education — systematic instruction in sports, exercises, and hygiene given as part of a school or college program.
- pig-tailed macaque — a forest-dwelling southeast Asian macaque, Macaca nemestrina, having a short, curled tail, colonized for animal behavior studies.
- play cat and mouse — Also called cat and rat. a children's game in which players in a circle keep a player from moving into or out of the circle and permit a second player to move into or out of the circle to escape the pursuing first player.
- play catch-up ball — to adjust one's style of play so as to make up for a lack of points, runs, etc.
- pleasure principle — an automatic mental drive or instinct seeking to avoid pain and to obtain pleasure.
- plenary indulgence — a remission of the total temporal punishment that is still due to sin after absolution. Compare indulgence (def 6).
- plumber's merchant — a shop or business that sells things needed for the job of installing and repairing pipes, fixtures, etc, for water, drainage, and gas
- political question — a question regarded by the courts as being a matter to be determined by another department of government rather than of law and therefore one with which they will not deal, as the recognition of a foreign state.
- population balance — A population balance is a model showing particle sizes during a grinding process, which is used when designing a process.
- population control — a policy of attempting to limit the growth in numbers of a population, esp in poor or densely populated parts of the world, by programmes of contraception or sterilization
- portal circulation — blood flow in a portal system.
- potassium chlorate — a white or colorless, crystalline, water-soluble, poisonous solid, KClO 3 , used chiefly as an oxidizing agent in the manufacture of explosives, fireworks, matches, bleaches, and disinfectants.
- potassium chloride — a white or colorless, crystalline, water-soluble solid, KCl, used chiefly in the manufacture of fertilizers and mineral water, and as a source of other potassium compounds.
- pour cold water on — If someone pours cold water on a plan or idea, they criticize it so much that people lose their enthusiasm for it.