(n): a measure of radioactivity
(n): (physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole
(n): a number representing a quantity assumed to have a fixed value in a specified mathematical context
(n): the 18th letter of the Roman alphabet
(n): the conventional characters of the alphabet used to represent speech
(n): the length of a line segment between the center and circumference of a circle or sphere
(n): the linear extent in space from one end to the other; the longest dimension of something that is fixed in place
