R

• (noun) the length of a line segment between the center and circumference of a circle or sphere

  synonyms : radius

• (noun) the 18th letter of the Roman alphabet

• (noun) (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

• (noun) 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

WordNet® 3.0, © 2006 by Princeton University.

•   Add   Mnemonic      Origin      Usage      Flickr-Image      Comment
•   To add this word to Your wordlists click here
•   Click here to view photos related to this word from
•   http://www.mnemonicdictionary.com/word/r