23-letter words containing a, r, o, n
- rectangular coordinates — Usually, rectangular coordinates. either of two Cartesian coordinates in which the axes meet at right angles.
- refinery waste disposal — Refinery waste disposal is the system for dealing with waste materials, especially hazardous ones, in a refinery.
- regressive assimilation — assimilation in which a following sound has an effect on a preceding one, as in pronouncing have in have to as [haf] /hæf/ (Show IPA) influenced by the voiceless (t) in to.
- reincarnation, cycle of — cycle of reincarnation
- relative sunspot number — a number indicating the degree of sunspot activity on the sun as a factor of observer idiosyncrasies, the number of sunspot groups, and the number of individual sunspots.
- relativity of knowledge — the theory that all knowledge is relative to the mind, or that things can be known only through their effects on the mind, and that consequently there can be no knowledge of reality as it is in itself
- response generalization — generalization (def 4b).
- response-generalization — the act or process of generalizing.
- retrolental fibroplasia — an unusual eye disease occurring in premature infants, usually from being given high concentrations of oxygen, which causes abnormal formation of fibrous tissue behind the lens and often results in blindness.
- reverse polish notation — postfix notation
- rite of intensification — a ritual or ceremony performed by a community in a time of crisis that affects all members, as a rain dance during a drought.
- rocky mountain beeplant — a rank-smelling plant, Cleome serrulata, of the caper family, native to the western U.S., having showy, dense clusters of pink or white flowers, frequented by bees.
- roentgen equivalent man — the dose of ionizing radiation that produces the same effect in man as one roentgen of x- or gamma-radiation
- rolling-element bearing — a roller bearing or ball bearing.
- rotation-inversion axis — an axis of a crystal such that rotating about the axis and then inverting the crystal brings the crystal back to its original position.
- route of administration — A route of administration is the means by which a drug or agent enters the body, such as by mouth or by injection.
- rub sb up the wrong way — If you rub someone up the wrong way in British English, or rub someone the wrong way in American English, you offend or annoy them without intending to.
- russian orthodox church — the national Church of Russia, constituting a branch of the Eastern Church, presided over by the Patriarch of Moscow
- saint christopher-nevis — St. Kitts-Nevis.
- saint george's mushroom — an edible whitish basidiomycetous fungus, Tricholoma gambosum, with a floury smell
- sb doesn't miss a trick — If you say that someone does not miss a trick, you mean that they always know what is happening and take advantage of every situation.
- schizotypal personality — a personality disorder characterized by a group of symptoms similar to but less severe than schizophrenia, as odd behavior, peculiar thinking, and social isolation.
- school (crossing) guard — a person, either an adult or an older student, whose duty it is to help children cross streets near schools safely
- scottish national party — a political party advocating the independence of Scotland, founded in 1934
- secondary modern school — (formerly) a secondary school offering a more technical or practical and less academic education than a grammar school
- secondary seventh chord — a chord formed by superposition of three thirds upon any degree of the scale except the dominant.
- secondary sex character — any of a number of manifestations, as development of breasts or beard, muscularity, distribution of fat tissue, and change of pitch in voice, specific to each sex and incipient at puberty but not essential to reproduction.
- security association id — (networking) (SAID) A 32-bit field added to packet headers for encryption and authentication in the proposed Internet Protocol Version 6.
- self-addressed envelope — addressed to self
- separation of variables — a grouping of the terms of an ordinary differential equation so that associated with each differential is a factor consisting entirely of functions of the independent variable appearing in the differential.
- set one's heart at rest — Anatomy. a hollow, pumplike organ of blood circulation, composed mainly of rhythmically contractile smooth muscle, located in the chest between the lungs and slightly to the left and consisting of four chambers: a right atrium that receives blood returning from the body via the superior and inferior vena cavae, a right ventricle that pumps the blood through the pulmonary artery to the lungs for oxygenation, a left atrium that receives the oxygenated blood via the pulmonary veins and passes it through the mitral valve, and a left ventricle that pumps the oxygenated blood, via the aorta, throughout the body.
- severinus de monzambano — Samuel von [zah-moo-uh l fuh n] /ˈzɑ mu əl fən/ (Show IPA), ("Severinus de Monzambano") 1632–94, German jurist and historian.
- sheltered accommodation — housing specially designed to provide a safe environment for the elderly, handicapped, or disabled, often with some shared facilities and a caretaker
- short-billed marsh wren — sedge wren.
- sierra madre occidental — the system of mountains in the west of Mexico
- silicone breast implant — silicone filled bags that are implanted into a woman in order to increase the size of her breasts
- small-scale integration — SSI.
- social education centre — a daycentre, run by a local authority, for people with learning disabilities and sometimes also for people who have physical disabilities or are mentally ill
- social insurance number — a nine-digit number used by the federal government to identify a citizen
- social security payment — a payment of social security made to an individual
- socialist international — an international association of largely anti-Communist Social Democratic Parties, founded in Frankfurt in 1951
- somaliland protectorate — official name of the former British Somaliland.
- sovereignty association — (in Canada) a proposed arrangement by which Quebec would become independent but would maintain a formal association with Canada
- squamous cell carcinoma — a carcinoma that arises from squamous epithelium in the skin and sometimes in the mucous membranes.
- st. pierre and miquelon — two small groups of islands off the S coast of Newfoundland: an overseas territory of France; important base for fishing. 3 sq. mi. (240 sq. km). Capital: St. Pierre.
- standard widget toolkit — (graphics, programming, standard) (SWT) The Eclipse Foundation's framework for developing graphical user interfaces in Java. SWT is written in explicitly standard Java but uses the Java Native Interface to talk to a platform-native GUI library. SWT is the third major attempt to give Java a decent GUI framework, following AWT and Swing. Of the three, SWT is the most consistent with the native GUIs but its programming model is hard to port to non-Windows platforms.
- state coordinate system — a system of right-angled planar coordinates established by the U.S. Coast and Geodetic Survey for each state in the United States.
- state-trading countries — countries whose export and import trading is government controlled
- statutory maternity pay — the maternity pay a woman is legally entitled to
- steal someone's thunder — to strike, drive, inflict, give forth, etc., with loud noise or violent action.