19-letter words containing e, g, i, r
- relational language — (language) Any kind of programming language that specifies output in terms of some property and some arguments. For example, if Tom has two brothers, Dick and Harry, a relational language will respond to the query "Who is Tom's brother?" with either Dick or Harry. Notice that unlike functional languages, relational languages do not require a unique output for each predicate/argument pair. Prolog is the best known relational language.
- releasing mechanism — a hypothetical control complex in the central nervous system of animals that triggers the appropriate behavioral response to a releaser.
- relief organization — humanitarian group
- religious education — religion as school subject
- removable cartridge — a hard disk enclosed in a case that can be removed from the disk drive, having more storage than floppy disks.
- republique malgache — French name of Malagasy Republic.
- resign oneself (to) — to submit or become reconciled (to); accept (something) passively
- resistance training — physical training that utilizes isometric, isotonic, or isokinetic exercise to strengthen or develop the muscles.
- resonant-jet engine — resojet engine.
- respiratory pigment — any of several colored protein substances, as hemoglobin and hemocyanin, in the circulatory system of animals and some plants, that combine reversibly with oxygen that is carried to the tissues
- reverse engineering — (systems, product, design) The process of analysing an existing system to identify its components and their interrelationships and create representations of the system in another form or at a higher level of abstraction. Reverse engineering is usually undertaken in order to redesign the system for better maintainability or to produce a copy of a system without access to the design from which it was originally produced. For example, one might take the executable code of a computer program, run it to study how it behaved with different inputs and then attempt to write a program which behaved identically (or better). An integrated circuit might also be reverse engineered by an unscrupulous company wishing to make unlicensed copies of a popular chip.
- revival of learning — the Renaissance in its relation to learning, especially in literature (Revival of Literature or Revival of Letters)
- rhodesian ridgeback — a large short-haired breed of dog characterized by a ridge of hair growing along the back in the opposite direction to the rest of the coat. It was originally a hunting dog from South Africa
- ride roughshod over — shod with horseshoes having projecting nails or points.
- riemannian geometry — Also called elliptic geometry. the branch of non-Euclidean geometry that replaces the parallel postulate of Euclidean geometry with the postulate that in a plane every pair of distinct lines intersects. Compare hyperbolic geometry.
- 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.
- right-eyed flounder — any of several flatfishes of the family Pleuronectidae, having both eyes on the right side of the head.
- ring someone's bell — a hollow instrument of cast metal, typically cup-shaped with a flaring mouth, suspended from the vertex and rung by the strokes of a clapper, hammer, or the like.
- ring up the curtain — to begin a theatrical performance
- ring-a-ring-a-roses — a children's game in which the players sing a song, at the end of which they all fall down
- ring-spinning frame — a machine containing the ring, traveler, and bobbin used in spinning yarn.
- rio grande do norte — a state in E Brazil. 20,464 sq. mi. (53,000 sq. km). Capital: Natal.
- run into the ground — to do too long or too often; overdo
- run-length encoding — A kind of compression algorithm which replaces sequences ("runs") of consecutive repeated characters (or other units of data) with a single character and the length of the run. This can either be applied to all input characters, including runs of length one, or a special character can be used to introduce a run-length encoded group. The longer and more frequent the runs are, the greater the compression that will be achieved. This technique is particularly useful for encoding black and white images where the data units would be single bit pixels.
- saber-toothed tiger — any of several extinct members of the cat family Felidae from the Oligocene to Pleistocene Epochs, having greatly elongated, saberlike upper canine teeth.
- sabre-toothed tiger — any of various extinct Tertiary felines of the genus Smilodon and related genera, with long curved upper canine teeth
- sandwich generation — the generation of people still raising their children while having to care for their aging parents.
- santiago del estero — a city in N Argentina.
- saturation coverage — news coverage (of an event, etc) that is very thorough in order not to miss any details
- savings certificate — a certificate of deposit for a specific sum of money in a savings account, especially a deposit for a fixed term at a specified interest rate.
- scattersite housing — public housing, especially for low-income families, built throughout an urban area rather than being concentrated in a single neighborhood.
- screen actors guild — a labor union for motion-picture performers, founded in 1933. Abbreviation: SAG.
- sea floor spreading — a process in which new ocean floor is created as molten material from the earth's mantle rises in margins between plates or ridges and spreads out.
- sea-floor spreading — a process in which new ocean floor is created as molten material from the earth's mantle rises in margins between plates or ridges and spreads out.
- secondary picketing — the picketing by strikers of a place of work that supplies goods to or distributes goods from their employer
- secretarial college — a college where people are trained to be secretaries
- self-aggrandizement — increase of one's own power, wealth, etc., usually aggressively.
- self-congratulating — the expression or feeling of uncritical satisfaction with oneself or one's own accomplishment, good fortune, etc.; complacency.
- self-congratulation — the expression or feeling of uncritical satisfaction with oneself or one's own accomplishment, good fortune, etc.; complacency.
- semisubmersible rig — Also called semisubmersible rig. a self-propelled barge that is mounted on partially submerged legs supported by underwater pontoons, rides at anchor, and serves as a work base and living quarters in deep offshore drilling operations.
- separation negative — Photography. a black-and-white negative of one of the additive primary colors used to form a color image.
- setting-up exercise — any of a set of exercises, as deep knee bends and push-ups, for improving one's posture, muscle tone, or limberness, or for reducing one's weight.
- sexual stereotyping — the formation or promotion of a fixed general idea or image of how men and women will behave
- sharp-tailed grouse — a grouse, Pedioecetes phasianellus, of prairies and open forests of western North America, similar in size to the prairie chicken but with a more pointed tail.
- shipping department — a department in a company responsible for arranging, receiving, recording, and sending shipments of goods
- shoestring potatoes — potatoes cut into long, very narrow strips and fried crisp in deep fat
- shoestring root rot — oak-root rot.
- sidereal hour angle — the angle, measured westward through 360°, between the hour circle passing through the vernal equinox and the hour circle of a celestial body.
- sign of aggregation — any of the signs used to indicate grouping in an algebraic expression: vinculum, bar, or raised horizontal line, ; a pair of parentheses, (a + b); a pair of brackets, [ a + b ]; or a pair of braces, { a + b }.
- significant figures — the figures of a number that express a magnitude to a specified degree of accuracy, rounding up or down the final figure