ROENTGEN /ˈɹɜːnt.ɡən/ Scrabble 9 Words With Friends 12 Definition noun a unit of radiation exposure. — synonyms: R noun German physicist who discovered x-rays and developed roentgenography (1845-1923). — synonyms: Wilhelm_Konrad_Roentgen, Rontgen, Wilhelm_Konrad_Rontgen See all 97 words you can make from ROENTGEN → 8-letter words Words starting with R Words ending with N ← Unscramble different letters