とっき 突起 Common word LinksSentence search for 突起Sentence search for とっきSentence search for 凸起Kanji details for 突 and 起Edit in JMdict Noun, Suru verb, Intransitive verb1. protuberance; projection; prominence; protrusion; bump; boss; process; apophysisOther forms凸起 【とっき】Notes凸起: Rarely-used kanji form. Discussions Log in to talk about this word.