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Words starting with r

Word Definition
R 1. R, the eighteenth letter of the English alphabet, is a vocal consonant. It is sometimes called a semivowel, and a liquid. See Guide to Pronunciation, // 178, 179, and 250-254.
2. (n.) the length of a line segment between the center and circumference of a circle or sphere
3. (n.) the 18th letter of the Roman alphabet
4. (n.) (physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole
5. (n.) a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air
R and B 1. (n.) a combination of blues and jazz that was developed in the United States by Black musicians; an important precursor of rock 'n' roll
R-2 1. (n.) street names for flunitrazepan
R. B. Cattell 1. (n.) American psychologist (born in England) who developed a broad theory of human behavior based on multivariate research (1905-1998)
R. Buckminster Fuller 1. (n.) United States architect who invented the geodesic dome (1895-1983)
R. J. Mitchell 1. (n.) English aeronautical engineer (1895-1937)
R.C. 1. (adj.) of or relating to or supporting Romanism
R.I. 1. (n.) a state in New England; one of the original 13 colonies; the smallest state
R.V. 1. (n.) a motorized wheeled vehicle used for camping or other recreational activities
ra 1. (n.) A roe; a deer.
2. (n.) (astronomy) the equatorial coordinate specifying the angle, measured eastward along the celestial equator, from the vernal equinox to the intersection of the hour circle that passes through an object in the sky; usually expressed in hours and minutes and seconds; used with declination to specify positions on the celestial sphere
3. (n.) ancient Egyptian sun god with the head of a hawk; a universal creator; he merged with the god Amen as Amen-Ra to become the king of the gods
4. (n.) an intensely radioactive metallic element that occurs in minute amounts in uranium ores
ra- 1. A prefix, from the Latin re and ad combined, coming to us through the French and Italian. See Re-, and Ad-.
raash 1. (n.) The electric catfish.
rab 1. (n.) A rod or stick used by masons in mixing hair with mortar.
rabat 1. (n.) A polishing material made of potter's clay that has failed in baking.
2. (n.) the capital of Morocco; located in the northwestern on the Atlantic coast
rabate 1. (v.) To recover to the fist, as a hawk.
rabatine 1. (n.) A collar or cape.
rabato 1. (n.) A kind of ruff for the neck; a turned-down collar; a rebato.
2. (n.) a wired or starched collar of intricate lace; worn in 17th century
rabbate 1. (v. t.) To abate or diminish.
2. (n.) Abatement.
rabbet 1. (v. t.) To cut a rabbet in; to furnish with a rabbet.
2. (v. t.) To unite the edges of, as boards, etc., in a rabbet joint.
3. (n.) A longitudinal channel, groove, or recess cut out of the edge or face of any body; especially, one intended to receive another member, so as to break or cover the joint, or more easily to hold the members in place; thus, the groove cut for a panel, for a pane of glass, or for a door, is a rabbet, or rebate.
4. (n.) Same as Rabbet joint, below.
5. (n.) a rectangular groove made to hold two pieces together
6. (v.) cut a rectangular groove into
7. (v.) join with a rabbet joint
rabbet joint 1. (n.) a joint formed by fitting together two rabbeted boards
rabbet plane 1. (n.) a woodworking plane designed to cut rabbets
rabbeted 1. (imp. v. part.) of Rabbet
rabbeting 1. (pres. v. part.) of Rabbet
rabbi 1. (n.) Master; lord; teacher; -- a Jewish title of respect or honor for a teacher or doctor of the law.
2. (n.) a Hebrew title of respect for a Jewish scholar or teacher
3. (n.) spiritual leader of a Jewish congregation; qualified to expound and apply Jewish law
Rabbi Moses Ben Maimon 1. (n.) Spanish philosopher considered the greatest Jewish scholar of the Middle Ages who codified Jewish law in the Talmud (1135-1204)
rabbies 1. (n. pl.) of Rabbi
rabbin 1. (n.) Same as Rabbi.
rabbinate 1. (n.) the office or function of a rabbi
2. (n.) rabbis collectively
rabbinic 1. (adj.) Alternative form of Rabbinical
2. (n.) The language or dialect of the rabbins; the later Hebrew.
3. (adj.) of or relating to rabbis or their teachings
rabbinical 1. (adj.) Of or pertaining to the rabbins or rabbis, or pertaining to the opinions, learning, or language of the rabbins.
2. (adj.) of or relating to rabbis or their teachings