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12-letter words that end in r

  • exclusive or — (logic)   (XOR, EOR) /X or, E or/ A two-input function whose result is true if one input is true and the other is false. The truth table is A | B | A xor B --+---+-------- F | F | F F | T | T T | F | T T | T | F The output is thus true if the inputs are not equal. If one input is false, the other is passed unchanged whereas if one input is true, the other is inverted. In Boolean algebra, exclusive or is often written as a plus in a circle: "⊕". The circle may be omitted suggesting addition modulo two. In digital logic, an exclusive or logic gate is drawn like a normal inclusive or gate but with a curved line across both inputs: {exclusive or gate " />.
  • exhibitioner — A student who has been awarded an exhibition (scholarship).
  • experimenter — A person who experiments.
  • extemporizer — One who extemporizes.
  • extensometer — An instrument for measuring the deformation of a material under stress.
  • exterminator — Someone or something that exterminates.
  • external ear — the part of the ear consisting of the auricle and the auditory canal
  • exteroceptor — A sensory receptor that receives external stimuli.
  • extinguisher — Anything that extinguishes something; but especially a fire extinguisher.
  • extranuclear — situated or occurring in part of a cell outside the nucleus
  • fair-weather — used in or intended for fair weather only.
  • faith healer — healing effected through prayer or religious faith; divine healing.
  • faith-healer — healing effected through prayer or religious faith; divine healing.
  • falling door — flap door (def 1).
  • falling star — an incandescent meteor; a shooting star.
  • false colour — colour used in a computer or photographic display to help in interpreting the image, as in the use of red to show high temperatures and blue to show low temperatures in an infrared image converter
  • far and near — at or to a great distance; a long way off; at or to a remote point: We sailed far ahead of the fleet.
  • fast reactor — a nuclear reactor using little or no moderator, fission being caused by fast neutrons
  • fast-tracker — of or relating to the fast track.
  • fault-finder — a person who habitually finds fault, complains, or objects, especially in a petty way.
  • feather star — a free-swimming crinoid.
  • fence-sitter — a person who remains neutral or undecided in a controversy.
  • fennelflower — any of various plants belonging to the genus Nigella, of the buttercup family, especially N. sativa, the seeds of which are used, especially in the East, as a condiment and medicine.
  • festivalgoer — A person attending a festival.
  • feuchtwanger — Lion [lee-awn] /ˈli ɔn/ (Show IPA), 1884–1958, German novelist and dramatist.
  • field-holler — a cry employing falsetto, portamento, and sudden changes of pitch, used in African-American work songs, later integrated into the techniques of the blues
  • fifth-grader — a student in the fifth grade of the American education system
  • file manager — a program that organizes and arranges files in a computer
  • filibusterer — A person who filibusters.
  • filter paper — porous paper used in filtering.
  • fingerflower — purple foxglove.
  • fire watcher — a person who watches for fires, esp those caused by aerial bombardment
  • firebreather — A performer who creates fireballs by breathing a fine mist of fuel over an open flame.
  • firing order — the sequence of ignition in the cylinders of an internal-combustion engine
  • first finger — the finger next to the thumb; index finger
  • first reader — the elected official of a church or society who conducts the services and meetings and reads from the writings of Mary Baker Eddy and the Scriptures.
  • first-grader — a child in the first grade
  • first-termer — a person serving his or her first term, as a member of the U.S. Congress.
  • firstnighter — a person who often or usually attends the theater, opera, etc., on opening night.
  • flag carrier — an airline that is locally registered in a particular country
  • flag officer — a naval officer above the rank of captain, as a fleet admiral, admiral, vice-admiral, rear admiral, or commodore, who is entitled to display a flag indicating his or her rank.
  • flameproofer — any agent which renders something flameproof
  • flamethrower — a weapon, either mounted or portable, that sprays ignited incendiary fuel for some distance.
  • flash powder — powder that could be ignited to provide a bright light to take a photograph
  • flat-earther — a person who adheres to the idea that the earth is flat.
  • flea-flicker — a deceptive offensive play in which the ball is passed or transferred laterally before or after a forward pass.
  • flegenheimer — Arthur ("Dutch Schultz") 1902–35, U.S. gangster.
  • flesh colour — of a yellowish-pink to yellowish-grey colour roughly that of the skin of a white person
  • flinders bar — a bar of soft iron, mounted vertically beneath a compass to compensate for vertical magnetic currents.
  • flip-flopper — a person who makes a complete change of policy, opinion, etc
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