放ほう射しゃ性せい炭たん素そMeaningsNoun1. radiocarbon (i.e. carbon-14)Kanji used放release射shoot性nature (of a person)炭charcoal素elementaryPitch accentほうしゃせいたんそComposed of放ほう射しゃ性せいradioactiveNoun炭たん素そcarbon (C)Noun