凸
凸·convex
- On-yomi
- トツ
- Kun-yomi
- none
By Nihongo PathUpdated
Stroke order
Write it in this order; the numbers mark where each stroke starts.
Common words
| Word | Reading | Meaning |
|---|---|---|
| 凸凹 | でこぼこ | bumpy |
| 凸レンズ | とつレンズ | convex lens |
| 凹凸 | おうとつ | unevenness |
| 凸版 | とっぱん | letterpress printing |
Example sentences
凸レンズは光を一点に集める。
とつレンズはひかりをいってんにあつめる。
A convex lens gathers light to a single point.
凸凹した道を自転車で走った。
でこぼこしたみちをじてんしゃではしった。
I cycled along a bumpy road.
Similar-looking kanji
Do not confuse these on the exam.
Common mistakes
- Reading 凸凹 as おうとつ — that reading belongs to 凹凸; 凸凹 is でこぼこ
Memory aid
Picture it
The shape is drawn literally: a bump sticking up out of a flat surface.
Vocabulary using this kanji
Quick check
1 / 2Multiple choiceDifficulty 4 of 5
What does the kanji 凸 mean?