r

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r  /ˈɑr/ ? Meaning of "r"

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Definition(s):

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

Synonym(s)

gas constant, universal gas constant, roentgen

Word of the Day
incendiary
/ɪn ˈsɛn di ɛ ri /

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