R
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1 R
A unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air.
synoniem: roentgen.
Pools: R, rentgen
2 R
physics The universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole.
synoniemen: gas constant, universal gas constant.
3 R
The 18th letter of the Roman alphabet.
4 r
The length of a line segment between the center and circumference of a circle or sphere.
synoniem: radius.
Nederlands: straal, radius
Pools: promień, r
Vind elders meer over R: etymologie - rijmwoorden - Wikipedia.
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