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r
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noun - (physics) the universal constant in the gas equation: pressure times volume = R times temperature
Synonym for r
gas constant
universal gas constant
Associated with r
natural philosophy
physics
constant
noun - a unit of radiation exposure
Synonym for r
roentgen
Associated with r
radioactivity unit
noun - the 18th letter of the Roman alphabet
Associated with r
Latin alphabet
Roman alphabet
alphabetic character
letter of the alphabet
letter
noun - the length of a line segment between the center and circumference of a circle or sphere
Synonym for r
radius
Associated with r
diam
diameter
semidiameter
radius of curvature
length
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