Kanji
凸
Convex
Also: Uneven
On'yomi
- とつ totsu
Kun'yomi
- でこ deko
Kanji
Convex
Also: Uneven
凸 has 5 strokes and its Kangxi radical is 凵 (open box), number 17. Hashidari places it at JLPT N1. Japanese students learn it in junior high and high school.
No official JLPT kanji list exists: the level is Hashidari's own placement. How we place kanji
JLPT N1 kanji list · Secondary school kanji list (jōyō kanji after grade 6) · All kanji