12-letter words starting with r
- r.s.v.p.'ing — to reply to an invitation: Don't forget to RSVP before Thursday.
- rabbet joint — a joint between rabbeted parts.
- rabbet plane — a plane for cutting rabbets or the like, having a blade set to one side at right angles or diagonally to the direction of motion.
- rabbinically — In a rabbinical way.
- rabbit fever — tularemia.
- rabbit hutch — a cage, usually of wood and wire mesh, for keeping domestic or pet rabbits in
- rabbit punch — a short, sharp blow to the nape of the neck or the lower part of the skull.
- rabbitfishes — Plural form of rabbitfish.
- rabble-rouse — to stir up the emotions or prejudices of the public; agitate.
- race meeting — A race meeting is an occasion when a series of horse races are held at the same place, often during a period of several days.
- race norming — the process of statistically adjusting the scores of minority job applicants on job-qualification tests by rating each test-taker's score against the results of others in his or her racial or ethnic group.
- race suicide — the extinction of a racial or ethnic population that tends to result when, through the unwillingness or forbearance of its members to have children, the birthrate falls below the death rate.
- racemic acid — an isomeric modification of tartaric acid that is sometimes found in the juice of grapes in conjunction with the common dextrorotatory form and is optically inactive but can be separated into the two usual isomeric forms, dextrorotatory and levorotatory.
- racemization — the conversion of an optically active substance into an optically inactive mixture of equal amounts of the dextrorotatory and levorotatory forms.
- rachiotomies — Plural form of rachiotomy.
- rachischisis — A developmental birth defect in which the neural tube fails to close completely, leading to motor and sensory deficits, chronic infections, and disturbances in bladder function.
- rachmaninoff — Sergei Wassilievitch [sur-gey vuh-seel-yuh-vich;; Russian syir-gyey vuh-syee-lyi-vyich] /sɜrˈgeɪ vəˈsil yə vɪtʃ;; Russian syɪrˈgyeɪ vʌˈsyi lyɪ vyɪtʃ/ (Show IPA), 1873–1943, Russian pianist and composer.
- racing homer — a kind of homing pigeon used for racing
- racing skate — a tubular ice skate having a long blade extending beyond the heel and toe.
- racing yacht — a yacht used in sailing races
- rack railway — cog railway.
- racket press — a device consisting of a frame closed by a spring mechanism, for keeping taut the strings of a tennis racket, squash racket, etc
- racketeering — a person engaged in a racket.
- radar beacon — a radar device at a fixed location that, on receiving a radar signal, automatically transmits a particular radar signal in reply, identifying itself and enabling navigators of ships and aircraft to determine their distance and direction from it.
- radar picket — a ship, vehicle, or aircraft stationed at a distance from a protected force to increase radar detection range.
- radar screen — a screen on equipment used in radar, a method for detecting the position and velocity of a distant object
- radar sensor — a sensor on equipment used in radar, a method for detecting the position and velocity of a distant object
- radiant flux — the time rate of flow of radiant energy.
- radiant heat — heat energy transmitted by electromagnetic waves in contrast to heat transmitted by conduction or convection.
- radiata pine — a pine tree, Pinus radiata, native to the western USA. but grown in Australia, New Zealand, and elsewhere to produce building timber
- radiator cap — a cap in the opening of a device for cooling an internal-combustion engine, through which coolant liquid can be added
- radical axis — the line such that tangents drawn from any point of the line to two given circles are equal in length.
- radical chic — the patronage of extremists or left-wing radicals by rich or famous people, as through invitations to social functions or public expressions of support.
- radical left — the faction representing extreme left-wing political views, often Marxist or Maoist in ideology.
- radical sign — the symbol √ or indicating extraction of a root of the quantity that follows it, as √25=5 or .
- radicicolous — living on the roots of plants
- radicivorous — feeding on the roots of plants
- radiesthesia — the ability to sense energy forces or radiation, esp from the human body
- radiesthetic — of or relating to radiesthesia
- radio beacon — a radio station that sends a characteristic signal so as to enable ships or airplanes to determine their position or bearing by means of a radio compass.
- radio galaxy — a galaxy that emits much more strongly in the radio part of the spectrum than does a typical galaxy.
- radio source — a cosmic object or phenomenon, as a galaxy, pulsar, quasar, or the remnant of a supernova or of a galactic collision, that emits radio waves.
- radio window — the range of wavelengths at which the earth's atmosphere is transparent to radio waves.
- radio-carbon — Also called carbon 14. a radioactive isotope of carbon with mass number 14 and a half-life of about 5730 years: widely used in the dating of organic materials.
- radio-collar — to attach a radio collar to (an animal).
- radiobiology — the branch of biology dealing with the effects of radiation on living matter.
- radioecology — the branch of ecology concerned with the effects of radioactivity on the environment
- radioelement — a radioactive element.
- radiographer — X-ray technician
- radioisotope — a radioactive isotope, usually artificially produced: used in physical and biological research, therapeutics, etc.
On this page, we collect all 12-letter words starting with letter R. It’s easy to find right word with a certain length. It is the easiest way to find 12-letter word that beginning with R to use in Scrabble or Crossword puzzles.