- Traditional Chinese Character(HanT):
第四紀
- Simplified Chinese Character(HanS):
第四纪
- Bopomofo(Mandarin Phonetic Symbols): ㄉㄧˋ ㄙˋ ㄐㄧˋ (ㄉㄙㄐ)
- Bopomofo(Zhuyin Keyboard Input/IME): 2u4n4ru4
- 「第四紀」的注音符號/「第四紀」怎麼發音怎麼唸: ㄉㄧˋ ㄙˋ ㄐㄧˋ
- (ASCII) Hanyu Pinyin: "disiji" "Di4Si4Ji4" "Di4 Si4 Ji4" (DSJ)
- (Latin) Hànyǔ Pīnyīn: DìSìJì [ Dì Sì Jì ]
- (英文翻譯) English Translation: "Quaternary"
- (西語翻譯) Traducción Español: "Cuaternario"
- (日文翻譯) 日本語翻訳: "第四紀"