Definitions for r
This page provides all possible meanings and translations of the word r
a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air
gas constant, universal gas constant, R(noun)
(physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole
the 18th letter of the Roman alphabet
the length of a line segment between the center and circumference of a circle or sphere
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
R is the eighteenth letter of the ISO basic Latin alphabet.
The Standard Electrical Dictionary
(a) Abbreviation and symbol for Reamur, as 10º R., meaning 10º by the Reamur thermometer. (See Reamur Scale.) (b) Symbol for resistance, as in the expression of Ohm's Law C=E. (rho, Greek r) Symbol for specific resistance.
Translations for r
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