外がい部ぶ被ひ曝ばくMeaningsNoun1. external exposure (to radiation)Kanji used外outside部section被be a target of曝exposureComposed of外がい部ぶoutside (e.g. of a building); exterior; outside (of a group, company, etc.); outside worldNoun被ひ曝ばくbeing exposed to radiation; radiation exposureNoun