Meaning: [ɑː] 
n. 1. a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air 2. (physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole 3. the 18th letter of the Roman alphabet 4. the length of a line segment between the center and circumference of a circle or sphere.
n. 1. a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air 2. (physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole 3. the 18th letter of the Roman alphabet 4. the length of a line segment between the center and circumference of a circle or sphere. 
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(151) Something of an all-star outfit, each band member is an accomplished musician with an impressive r sum and enormous talent.
(152) Support R & D to prepare capital appropriation request.
(153) The ship is at anchor in Foochow harbo ( u ) r at present.
(154) The integration corresponds to adding successive shells to the core until the core has radius R.
(155) The coefficient of correlation, R, is obtained by taking the square root of R 2.
(156) They earn their living by manual labo ( u ) r.
(157) Edward R. Murrow's canorous broadcasts of the blitz of London ( Newsweek ).
(158) Passion , though a bad regulator,[www.Sentencedict.com] is a powerful spring . ------ R . W.
(159) Therefore, DOC - 1 R gene may be an CDK 2 inhibitor specifically.
(160) " No, r - . " corrected the man, " M - a - v - r - o ---- ".
(161) You didn't authorize the replacement generator, saving money for the new M. R . I. Machine.
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(163) The chilling courtesy was his only armo ( u ) r .
(164) Well , why didn't you tell me this before we decided forego R & amp; D.