From Latin ūnus (“one”) (twice) + Latin octō (“eight”) + -io (“-ium”), after the element’s atomic number 118.
- (Brazil) IPA(key): /u.nuˈnɔ.t͡ʃi.u/ [u.nuˈnɔ.t͡ʃɪ.u], (faster pronunciation) /u.nuˈnɔ.t͡ʃju/
- (Brazil) IPA(key): /u.nuˈnɔ.t͡ʃi.u/ [u.nuˈnɔ.t͡ʃɪ.u], (faster pronunciation) /u.nuˈnɔ.t͡ʃju/
- (Southern Brazil) IPA(key): /u.nuˈnɔ.t͡ʃi.o/ [u.nuˈnɔ.t͡ʃɪ.o], (faster pronunciation) /u.nuˈnɔ.t͡ʃjo/
- Hyphenation: u‧nu‧nóc‧ti‧o
ununóctio m (uncountable)
- ununoctium (chemical element)