R (cross section ratio)
WordNet
noun
(1) The length of a line segment between the center and circumference of a circle or sphere
(2) The 18th letter of the Roman alphabet
(3) (physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole
(4) A unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air
WiktionaryText
Letter
- The eighteenth letter of the basic modern Latin alphabet.
Symbol
R
- roentgen (unit)
- resistance (in electricity)
- IUPAC 1-letter abbreviation for any purine
- IUPAC 1-letter abbreviation for arginine
Noun
R
R
- Republican
- (film certification) restricted
- reverse
- right (as opposed to left)
- ring
- The statistic reporting the number of runs scored by a player
- Thursday
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Letter
- The letter R