Roentgen: Meaning and Definition of

Roent•gen

1. 1845–1923, German physicist: discoverer of x-rays 1895; Nobel prize 1901.
2. (l.c.)a unit of exposure dose that measures x-rays or gamma rays in terms of the ions or electrons produced in dry air at 0° C and one atmosphere, equal to the amount of radiation producing one electrostatic unit of positive or negative charge per cubic centimeter of air. Abbr.: r, R

1. (sometimes l.c.) of or pertaining to Wilhelm Roentgen, the Roentgen unit, or esp. to x-rays.