Word
R, n.
the 18th letter of the Roman alphabet
<noun.communication>
R
r
semantic pointers
member holonym
hypernym
(physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole
<noun.quantity>
R
gas constant
universal gas constant
semantic pointers
domain of synset (topic)
hypernym
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.quantity>
R
roentgen
semantic pointers
hypernym