18-letter words containing a, c, t, u, l, r
- intercartilaginous — (anatomy) Within cartilage.
- involuntary muscle — muscle: contracts involuntarily
- kentucky bluegrass — a grass, Poa pratensis, of the Mississippi valley, used for pasturage and lawns.
- laugh out of court — to express mirth, pleasure, derision, or nervousness with an audible, vocal expulsion of air from the lungs that can range from a loud burst of sound to a series of quiet chuckles and is usually accompanied by characteristic facial and bodily movements.
- lean manufacturing — efficiency in the production of goods
- leatherback turtle — a sea turtle, Dermochelys coriacea, having the shell embedded in a leathery skin, reaching a length of more than 7 feet (2.1 meter) and a weight of more than 1000 pounds (450 kg): the largest living sea turtle; an endangered species.
- leave in the lurch — a situation at the close of various games in which the loser scores nothing or is far behind the opponent.
- lenticular process — a method for producing images with a three-dimensional effect by photographing on lenticulated film.
- liqueur chocolates — chocolates containing liqueur
- lonely hearts club — a club for people who are trying to find a lover or a friend
- microencapsulation — the process of enclosing chemical substances in microcapsules.
- modular arithmetic — arithmetic in which numbers that are congruent modulo a given number are treated as the same. Compare congruence (def 2), modulo, modulus (def 2b).
- molecular genetics — a subdivision of genetics concerned with the structure and function of genes at the molecular level.
- molecular spectrum — the spectrum of light emitted or absorbed by a species of molecule.
- muscular dystrophy — a hereditary disease characterized by gradual wasting of the muscles with replacement by scar tissue and fat, sometimes also affecting the heart.
- musical instrument — music
- mutually recursive — recursion
- national insurance — In Britain, national insurance is the state system of paying money to people who are ill, unemployed, or retired. It is financed by money that the government collects from people who work, or from their employers.
- natural childbirth — childbirth involving little or no use of drugs or anesthesia and usually involving a program in which the mother is psychologically and physically prepared for the birth process.
- natural convection — Natural convection is the loss of heat from a hot solid or liquid into air which is not artificially agitated.
- natural resistance — natural immunity.
- naval architecture — the science of designing ships and other waterborne craft.
- neovascularization — the development of new blood vessels, especially in tissues where circulation has been impaired by trauma or disease.
- neural tube defect — any of a group of congenital abnormalities involving the brain and spinal cord, including spina bifida and meningocele, caused by failure of the neural tube to close properly during embryonic development.
- no-fault insurance — Also called no-fault insurance. a form of automobile insurance designed to enable the policyholder in case of an accident to collect a certain basic compensation promptly for economic loss from his or her own insurance company without determination of liability.
- nocturnal emission — the release of semen during sleep, often during a sexual dream.
- non-circumstantial — of pertaining to, or derived from circumstances: a circumstantial result.
- nonstriated muscle — smooth muscle
- 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.
- numerical identity — the relation that holds between two relata when they are the selfsame entity, that is, when the terms designating them have the same reference
- numerical taxonomy — classification of organisms by a comparison of large numbers of observable characteristics that are given equal value instead of being weighted according to possible evolutionary significance.
- nursery facilities — places where young children are looked after
- occupational group — An occupational group is a category used by insurance companies to classify jobs according to how hazardous they are.
- on delicate ground — in a situation requiring tact
- 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.
- out of circulation — If someone is out of circulation, they do not appear in public or at social gatherings for a period of time. You can also say that someone is out of circulation when they are in prison.
- 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.
- 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
- 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.
- 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
- 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.