- Traditional Chinese Character(HanT):
自由基
- Simplified Chinese Character(HanS):
自由基
- Bopomofo(Mandarin Phonetic Symbols): ㄗˋ ㄧㄡˊ ㄐㄧ (ㄗㄧㄐ)
- Bopomofo(Zhuyin Keyboard Input/IME): "y4u.6ru " (y4u.6ru)
- (ASCII) Hanyu Pinyin: "ziyoji" "Zi4Yo2Ji1" "Zi4 Yo2 Ji1" (ZYJ)
- (Latin) Hànyǔ Pīnyīn: ZìYóJī [ Zì Yó Jī ]
- (英文翻譯) English Translation: "Free Radicals"
- (西語翻譯) Traducción Español: "radicales libres"
- (日文翻譯) 日本語翻訳: "フリーラジカル"