18-letter words containing u, r, i
- nurse-practitioner — a registered nurse who has received special training for diagnosing and treating routine or minor ailments. Abbreviation: NP.
- nursery facilities — places where young children are looked after
- oblique projection — something that is oblique.
- occupational group — An occupational group is a category used by insurance companies to classify jobs according to how hazardous they are.
- october revolution — Russian Revolution (def 2).
- of your own making — If you say that something such as a problem you have is of your own making, you mean you have caused or created it yourself.
- old curiosity shop — a novel (1840–41) by Dickens.
- on delicate ground — in a situation requiring tact
- on your conscience — If you have something on your conscience, you feel guilty because you know you have done something wrong.
- one's number is up — one is finished; one is ruined or about to die
- 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.
- order of australia — an order awarded to Australians for outstanding achievement or for service to Australia or to humanity at large; established in 1975
- order of magnitude — You can use order of magnitude when you are giving an approximate idea of the amount or importance of something.
- orientation course — induction into sth
- orthopedic surgery — corrective operation on bones or joints
- orthotungstic acid — an oxyacid acid of tungsten. Formula: H2WO4
- 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.
- out of the running — the act of a person, animal, or thing that runs.
- outer automorphism — an automorphism that is not an inner automorphism.
- over-conscientious — governed by conscience; controlled by or done according to one's inner sense of what is right; principled: She's a conscientious judge, who does not let personal prejudices influence her decisions.
- over-pronunciation — to pronounce (a word, syllable, etc.) in an exaggerated, affected, or excessively careful manner.
- overpressurization — pressure in excess of normal atmospheric pressure, as that caused by an explosion's shock wave or created in an accelerating airplane.
- ox-tongue partisan — a shafted weapon having a long, wide, tapering blade.
- 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.
- paediatric nursing — the branch of nursing concerned with the care of children
- pan american union — a former organization of American republics dedicated to furthering understanding and peace: replaced in 1970 by the secretariat of the Organization of American States.
- parachute regiment — an airborne regiment of an army
- parallel computing — parallel processing
- parallel evolution — the independent development of closely corresponding adaptive features in two or more groups of organisms that occupy different but equivalent habitats, as marsupial mammals in Australia and placental mammals on other continents.
- 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.
- partial evaluation — (compiler, algorithm) (Or "specialisation") An optimisation technique where the compiler evaluates some subexpressions at compile-time. For example, Partial evaluation might change the termination properties of the program if, for example, the expression (x * 0) was reduced to 0 it would terminate even if x (and thus x * 0) did not. It may be necessary to reorder an expression to partially evaluate it, e.g. f x y = (x + y) + 1 g z = f 3 z If we rewrite f: f x y = (x + 1) + y then the expression x+1 becomes a constant for the function g and we can say g z = f 3 z = (3 + 1) + z = 4 + z Partial evaluation of built-in functions applied to constant arguments is known as constant folding. See also full laziness.
- 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.
- passing-out parade — a ceremonial parade of cadets who have completed their training
- passive vocabulary — all the words, collectively, that a person can understand
- pedal steel guitar — an oblong, floor-mounted electrified guitar, usually having ten strings, fretted with a steel bar and producing a wailing sound that is modulated by use of a foot pedal.
- pemphigus vulgaris — a potentially fatal blistering skin disease, characterized by large blisters on the skin, mucous membranes of the mouth, genitals, intestines, etc, which eventually rupture and form painful denuded areas from which critical amounts of bodily protein, fluid, and blood may be lost
- pensioneer trustee — (in Britain) a person authorized by HMRC to oversee the management of a pension fund
- 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.
- percussion section — orchestra, group: drums, etc.
- percussion welding — a form of resistance welding in which the required pressure is provided by a hammerlike blow.
- perfect continuous — perfect progressive.
- perish the thought — to die or be destroyed through violence, privation, etc.: to perish in an earthquake.
- perlocutionary act — the action of affecting someone by uttering certain words
- pernicious anaemia — Pernicious anaemia is a very severe blood disease.
- persistent cruelty — conduct causing fear of danger to the life or health of a spouse (used in matrimonial proceedings before magistrates)
- personal insurance — insurance on personal risk, such as car insurance, health insurance or loss of earnings insurance
- petite bourgeoisie — the portion of the bourgeoisie having the least wealth and lowest social status; the lower middle class.