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19-letter words containing f, i, r, l

  • 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.
  • 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
  • reflux oesophagitis — inflammation of the gullet caused by regurgitation of stomach acids, producing heartburn: may be associated with a hiatus hernia
  • refreshable display — braille display
  • relief organization — humanitarian group
  • 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 letters — the collective body of literary people.
  • 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
  • research fellowship — the position or office of someone who conducts academic research into a subject at a university, etc
  • resign oneself (to) — to submit or become reconciled (to); accept (something) passively
  • respiratory failure — a condition in which the respiratory system is unable to provide an adequate supply of oxygen or to remove carbon dioxide efficiently
  • 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.
  • revival of learning — the Renaissance in its relation to learning, especially in literature (Revival of Literature or Revival of Letters)
  • right-eyed flounder — any of several flatfishes of the family Pleuronectidae, having both eyes on the right side of the head.
  • risk excess of loss — Risk excess of loss is a type of reinsurance that is given to an insurer to protect against a single loss or risk incurred at a specified amount.
  • ruffini's corpuscle — an end organ of certain sensory neurons that branches out parallel to the skin and responds to steady pressure.
  • rural free delivery — former name for rural delivery service. Abbreviation: R.F.D.
  • 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 of tranquillity — Astronomy. Mare Tranquillitatis.
  • 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.
  • self-administration — the management of any office, business, or organization; direction.
  • 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.
  • self-discrimination — an act or instance of discriminating, or of making a distinction.
  • self-interpretation — the act of interpreting; elucidation; explication: This writer's work demands interpretation.
  • self-reconstruction — an act of reconstructing.
  • self-representation — the act of representing.
  • self-responsibility — the state or fact of being responsible, answerable, or accountable for something within one's power, control, or management.
  • self-transformation — the act or process of transforming.
  • seminiferous tubule — any of the coiled tubules of the testis in which spermatozoa are produced.
  • seven hills of rome — the hills on which the ancient city of Rome was built: the Palatine, Capitoline, Quirinal, Caelian, Aventine, Esquiline, and Viminal
  • sharp-focus realism — photorealism.
  • sheet flood erosion — Geology. erosion by sheets of running water, rather than by streams.
  • siberian wallflower — a North American plant, Erysimum asperum, of the mustard family, having orange-yellow flowers.
  • sir wilfrid laurier — Sir Wilfrid [wil-frid;; French weel-freed] /ˈwɪl frɪd;; French wilˈfrid/ (Show IPA), 1841–1919, Canadian statesman: prime minister 1896–1911.
  • sodium hydrosulfite — a white, crystalline, water-soluble powder, Na 2 S 2 O 4 , used as a reducing agent, especially in dyeing, and as a bleach.
  • solid of revolution — a three-dimensional figure formed by revolving a plane area about a given axis.
  • specular reflection — Specular reflection is reflection of heat or light in which the angles of different parts of the surface are important.
  • sphere of influence — any area in which one nation wields dominant power over another or others.
  • splinterproof glass — glass that is designed not to form sharp splinters should it be shattered
  • spread oneself thin — to draw, stretch, or open out, especially over a flat surface, as something rolled or folded (often followed by out).
  • strait of gibraltar — a narrow strait between the S tip of Spain and the NW tip of Africa, linking the Mediterranean with the Atlantic
  • strike a false note — to behave inappropriately
  • strike off the roll — to expel from membership
  • sugar loaf mountain — a mountain in SE Brazil in Rio de Janeiro, at the entrance to Guanabara Bay. 1280 feet (390 meters).
  • supercritical fluid — A supercritical fluid is a fluid at a temperature and pressure at which there is no difference between liquid and gas.
  • term life insurance — life insurance for which premiums are paid over a limited time and that covers a specific term, the face value payable only if death occurs within that term.
  • the pilgrim fathers — the English Puritans who sailed on the Mayflower to New England, where they founded Plymouth Colony in SE Massachusetts (1620)
  • third law of motion — any of three laws of classical mechanics, either the law that a body remains at rest or in motion with a constant velocity unless an external force acts on the body (first law of motion) the law that the sum of the forces acting on a body is equal to the product of the mass of the body and the acceleration produced by the forces, with motion in the direction of the resultant of the forces (second law of motion) or the law that for every force acting on a body, the body exerts a force having equal magnitude and the opposite direction along the same line of action as the original force (third law of motion or law of action and reaction)
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