19-letter words containing c, e, l, u, a
- olive-backed thrush — Swainson's thrush.
- once in a blue moon — very rarely; almost never
- open-angle glaucoma — Ophthalmology. abnormally high fluid pressure in the eye, most commonly caused either by blockage of the channel through which aqueous humor drains (open-angle glaucoma or chronic glaucoma) or by pressure of the iris against the lens, which traps the aqueous humor (angle-closure glaucoma or acute glaucoma)
- optical double star — two stars that appear as one if not viewed through a telescope with adequate magnification, such as two stars that are separated by a great distance but are nearly in line with each other and an observer (optical double star) or those that are relatively close together and comprise a single physical system (physical double star)
- outplacement agency — an agency that provides counselling and careers advice, esp to redundant executives, which is paid for by their previous employer
- oxyacetylene burner — a blowpipe for cutting or welding metals at high temperatures
- particular negative — a proposition of the form “Some S is not P.” Symbol: O.
- pastoral counseling — the use of psychotherapeutic techniques by trained members of the clergy to assist parishioners who seek help for personal or emotional problems.
- paumotu archipelago — Tuamotu Archipelago.
- peroxysulfuric acid — persulfuric acid (def 1).
- phacoemulsification — the removal of a cataract by first liquefying the affected lens with ultrasonic vibrations and then extracting it by suction.
- phakoemulsification — the removal of a cataract by first liquefying the affected lens with ultrasonic vibrations and then extracting it by suction.
- phthalocyanine blue — a pigment used in painting, derived from copper phthalocyanine and characterized chiefly by its brilliant, dark-blue color and by permanence.
- physical sequential — (file format) (PS, QSAM, Queued Sequential Access Method) The simplest data set on an IBM mainframe. Sequential files can only be read or written from the beginning: they do not support random access.
- pillars of hercules — the two promontories at the E end of the Strait of Gibraltar: the Rock of Gibraltar on the European side and the Jebel Musa on the African side; according to legend, formed by Hercules
- pneumoencephalogram — an encephalogram made after the replacement of the cerebrospinal fluid by air or gas, rarely used since the development of the CAT scanner.
- police headquarters — building where police are stationed
- population genetics — the branch of genetics concerned with the hereditary makeup of populations.
- preproduction trial — a trial to test a prototype of a product before the product goes into full-scale production
- procedural language — (language) Any programming language in which the programmer specifies an explicit sequences of steps to follow to produce a result (an algorithm). The term should not be confused with "imperative language" - a language that specifies explicit manipulation of state. An example (non-imperative) procedural language is LOGO, which specifies sequences of steps to perform but does not have an internal state. Other procedural languages include Basic, Pascal, C, and Modula-2. Both procedural and imperative languages are in contrast to declarative languages, in which the programmer specifies neither explicit steps nor explicit state manipulation.
- property speculator — a person who takes part in property speculation
- pseudo-biographical — of or relating to a person's life: He's gathering biographical data for his book on Milton.
- pseudo-intellectual — a person exhibiting intellectual pretensions that have no basis in sound scholarship.
- pseudopsychological — of or relating to psychology.
- public intellectual — an intellectual, often a noted specialist in a particular field, who has become well-known to the general public for a willingness to comment on current affairs
- public-interest law — a branch of law that often utilizes class-action suits to protect the interest of a large group or of the public at large, as in matters relating to racial discrimination, air pollution, etc.
- puerperal psychosis — a mental disorder sometimes occurring in women after childbirth, characterized by deep depression, delusions of the child's death, and homicidal feelings towards the child
- quantum electronics — the application of quantum mechanics and quantum optics to the study and design of electronic devices
- radioactive fallout — the settling to the ground of airborne particles ejected into the atmosphere from the earth by explosions, eruptions, forest fires, etc., especially such settling from nuclear explosions (radioactive fallout) Compare rainout.
- radiopharmaceutical — any of a number of radioactive drugs used diagnostically or therapeutically.
- rap on the knuckles — a mild reprimand or light sentence
- reciprocity failure — a failure of the two exposure variables, light intensity and exposure time, to behave in a reciprocal fashion at very high or very low values
- reconceptualization — to form into a concept; make a concept of.
- recurrence relation — (mathematics) An equation that defines each element of a sequence in terms of one or more earlier elements. E.g. The Fibonacci sequence, X[1] = 1 X[2] = 1 X[n] = X[n-1] + X[n-2] Some recurrence relations can be converted to "closed form" where X[n] is defined purely in terms of n, without reference to earlier elements.
- reduction potential — (in a galvanic cell) the potential of the electrode at which reduction occurs.
- regular icosahedron — an icosahedron in which each of the faces is an equilateral triangle
- relational calculus — (database) An operational methodolgy, founded on predicate calculus, dealing with descripitive expressions that are equivalent to the operations of relational algebra. Codd's reduction algorithm can convert from relational calculus to relational algebra. Two forms of the relational calculus exist: the tuple calculus and the domain calculus.
- religious education — religion as school subject
- republic of ireland — John, 1838–1918, U.S. Roman Catholic clergyman and social reformer, born in Ireland: archbishop of St. Paul, Minn., 1888–1918.
- republic of vietnam — the name (from 1955–75) for South Vietnam, as an independent republic, following the division of the country in 1954 into North Vietnam and South Vietnam
- republique malgache — French name of Malagasy Republic.
- reticular formation — a network of neurons in the brainstem involved in consciousness, regulation of breathing, the transmission of sensory stimuli to higher brain centers, and the constantly shifting muscular activity that supports the body against gravity.
- reticulated tracery — tracery consisting in large part of a netlike arrangement of repeated geometrical figures.
- reticuloendothelial — pertaining to, resembling, or involving cells of the reticuloendothelial system.
- rhetorical question — a question asked solely to produce an effect or to make an assertion and not to elicit a reply, as “What is so rare as a day in June?”.
- right circular cone — a cone whose surface is generated by lines joining a fixed point to the points of a circle, the fixed point lying on a perpendicular through the center of the circle.
- samuel de champlain — Samuel de [sam-yoo-uh l duh;; French sa-my-el duh] /ˈsæm yu əl də;; French sa müˈɛl də/ (Show IPA), 1567–1635, French explorer in the Americas: founder of Quebec; first colonial governor 1633–35.
- san juan de la cruz — San Juan de la [sahn hwahn de lah] /sɑn ʰwɑn dɛ lɑ/ (Show IPA), John of the Cross, Saint.
- scale down (or up) — to reduce (or increase), often according to a fixed ratio or proportion
- school of the squad — an institution where instruction is given, especially to persons under college age: The children are at school.