ほうしゃせいたんそ 放射性炭素 LinksSentence search for 放射性炭素Sentence search for ほうしゃせいたんそKanji details for 放, 射, 性, 炭 and 素Edit in JMdict Noun1. radiocarbon (i.e. carbon-14) Discussions Log in to talk about this word.