放ほう射しゃ性せい核かく種しゅMeaningsNoun1. radionuclide; radioactive nuclideKanji used放release射shoot性nature (of a person)核nucleus種seedPitch accentほうしゃせいかくしゅComposed of放ほう射しゃ性せいradioactiveNoun核かく種しゅnuclideNoun