roentgen

• POS: Noun
• HYPHEN: roent=gen

CIDE DICTIONARY

roentgen, a. 

 Of or pertaining to the German physicist Wilhelm Konrad Röntgen, or the rays discovered by him; as, Röntgen apparatus.  [Webster 1913 Suppl.]

OXFORD DICTIONARY

roentgen, n. a unit of ionizing radiation, the amount producing one electrostatic unit of positive or negative ionic charge in one cubic centimetre of air under standard conditions.

Idiom

roentgen rays X-rays.

Etymology

W. C. R{ouml}ntgen, Ger. physicist d. 1923, discoverer of X-rays