R Meaning

There are 4 meaning(s) for word R

R Meaning 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

    Synonyms : roentgen
R Meaning 2 : (physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole

    Synonyms : gas constant,  universal gas constant
R Meaning 3 : the length of a line segment between the center and circumference of a circle or sphere

    Synonyms : radius
R Meaning 4 : the 18th letter of the Roman alphabet

How to Pronounce R

  • ɑr