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

Words Related to R

Related words are words that are directly connected to each other through their meaning, even if they are not synonyms or antonyms. This connection may be general or specific, or the words may appear frequently together.