Definition of R

  • 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 Noun
  • 2. (physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole Noun
  • 3. The 18th letter of the Roman alphabet Noun
  • 4. The length of a line segment between the center and circumference of a circle or sphere Noun

Synonyms for word "r"

Semanticaly linked words with "r"

Hyponims for word "r"