Added 10 October 2026 roentgenometer noun Categories: Obscure Words noun ! Definition from Wiktionary (CC BY-SA). More about roentgenometer at Wordnik → Where our words come from → A device for measuring radiation. Related Words: radiometerroentgenogramirradiometerpenetrometerphotoradiometerratemeterradiographradiomicrometerdosimetermilliroentgenroentgenoscope Back to today's word