R
\ˈɑː], \ˈɑː], \ˈɑː]\
Definitions of R
- 2006 - WordNet 3.0
- 2011 - English Dictionary Database
- 1913 - Webster's Revised Unabridged Dictionary
- 1920 - A practical medical dictionary.
- 1894 - The Clarendon dictionary
- 1919 - The Concise Standard Dictionary of the English Language
- 1914 - Nuttall's Standard dictionary of the English language
- 1910 - Black's Law Dictionary (2nd edition)
- 1908 - Chambers's Twentieth Century Dictionary of the English Language
- 1846 - Medical lexicon: a dictionary of medical science
- 1900 - A dictionary of medicine and the allied sciences
- 1919 - The concise Oxford dictionary of current English
- 1898 - American pocket medical dictionary
- 1916 - Appleton's medical dictionary
- 1895 - Glossary of terms and phrases
- 1871 - The Cabinet Dictionary of the English Language
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(physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole
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the length of a line segment between the center and circumference of a circle or sphere
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a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air
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the 18th letter of the Roman alphabet
By Princeton University
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(physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole
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the length of a line segment between the center and circumference of a circle or sphere
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a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air
By DataStellar Co., Ltd
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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.
By Noah Webster.
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Abbreviation for Reaumur, indicating a thermometer scale, and for L. recipe, take, being the superscription of a prescription, usually indicated by the symbol R.
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V. Behring's term for the mass of tubercle bacilli employed in the preparation of tuberculase. RI, the mass of moist bacilli previous to any treatment; RII, the mass after the extraction of the substances soluble in alcohol (TZ); RIII, the mass remaining after the removal of the constituents of RII soluble in pure water (TV); RIV, the restbacillus, the residue after the extraction of the constituents of RIII soluble in 10 per cent. salt solution (TGI); this RIV contains TC.
By Stedman, Thomas Lathrop
By William Hand Browne, Samuel Stehman Haldeman
By James Champlin Fernald
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Is the eighteenth letter of the alphabet, and one of the liquids or semi-vowels. As a numeral, it stands for 80; and with a dash over it, for 80,000.
By Nuttall, P.Austin.
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In the signatures of royal persons, "R." is an abbreviation for "rex" (king) or "repina" (queen.) In descriptions of land, according to the divisions of the governmental survey. It stands for "range." Ot- tumwa, etc.. It. Co. v. McWilliams, 71 Iowa, 164, 32 N. W. 315.
By Henry Campbell Black
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the eighteenth letter in our alphabet, belonging to the class of liquids--the 'dog's letter' (littera canina), from the trilling or vibration of the tip of the tongue: as a medieval numeral=80; [=R]=80,000.--THE THREE R'S, a humorous term for reading, writing, and arithmetic.
By Thomas Davidson
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Is placed at the commencement of a prescription, as a contraction of Recipe. (See Abbreviation.) Originally, it was the sign of Jupiter, and was placed at the top of a formula, to propitiate the king of the gods, that the compound might act favorably.
By Robley Dunglison
By Alexander Duane
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letter (pl. Rs, R\'s). The r months, those with r in their names (Sep.-Ap.) as season for oysters; the three Rs, reading, (w)riting, & (a)rithmetic, as basis of elementary education. Abbreviations (1): R.: railway, R.S.O. (sub-office); R. (eaumur); R. (egina); religious, R.T.S. (tract society); repondez. R.S.V.P. (s\'il vous plait); requiesca (n)t, R.I.P. (in pace); resident, R.M. (agistrate); revised, R.V. (ersion); R. (ex); Rhode, R.I. (sland); Roman, R.C. (atholic); Royal, as R.A. (academy or academician; artillery), R.E. (ngineers), R.I.C. (Irish constabulary), R.M. (arines), R.M.A. (military academy), R.M.C. (military college), R.N. (avy), R.S.P.C.A. (society for prevention of cruelty to animals): r.: r. (ight). Abbreviations (2): Rev. (elation); Rev. (erend); Roffen., Bishop of Rochester; Rom. (ans); Rs, rupees; Rx, tens of rupees.
By Sir Augustus Henry
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Abbreviation for Reaumur
By Willam Alexander Newman Dorland
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As an abbrev., stands for Rex or Regina, king or queen; in medical prescriptions for Recipe [L.]; in the Naut. muster-book, R. denotes run, placed against the names of deserters, and of those who have missed three musters; R.P. for Respublica, republic.
By Henry Percy Smith
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the eighteenth letter of the English alphabet, is a liquid or semi-vowel. By most writers, r is considered to have one unvarying sound in all eases, being formed like l, but with a guttural utterance of the breath, and a sort of quivering motion of the tongue. As an abbreviation, it stands for Rex, King, Regina, Queen, as Victoria R. ; also for royal, as R.N., Royal Navy, &c.
