To get an ad-free experience on website and mobile app, please consider taking a subscription. Subscription fee will help us to add more words and definitions along with building language related features.
 |
Meaning of word r from English dictionary with examples, synonyms and antonyms.
r noun
Meaning : 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
Meaning : (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
Meaning : The 18th letter of the Roman alphabet.
Meaning : The length of a line segment between the center and circumference of a circle or sphere.
Synonyms : radius
