凸: the kanji for convex
凸 is a JLPT N1 kanji that means convex. Below are its readings, 3 common words and example sentences, all with audio.
Stroke order
凸 is written in 5 strokes. The red stroke is the one to write next, and the dot shows where it starts.
Words by reading
凸 has 1 reading in the official Jōyō Kanji Table. Below are 2 common words grouped by reading. Tap ▶ to hear each word (audio plays with a free account).
トツ (totsu)
On reading.
| Word | Meaning |
|---|---|
| 凸レンズとつれんず · totsurenzu | convex lens |
| 凹凸おうとつ · ōtotsu | unevenness |
Special readings to learn as whole words
These words use 凸, but their readings do not follow the readings above. The Jōyō Kanji Table lists them as special readings. Learn each one as a whole word.
| Word | Meaning |
|---|---|
| 凸凹でこぼこ · dekoboko | bumpy; uneven |
Example sentences for work and daily life
- 虫眼鏡には凸レンズが使われている。Mushimegane ni wa totsurenzu ga tsukawarete iru.Magnifying glasses use convex lenses.
- 凸凹の道を自転車で走った。Dekoboko no michi o jitensha de hashitta.I rode my bike on a bumpy road.
- 壁の凹凸をなくして塗り直した。Kabe no ōtotsu o nakushite nurinaoshita.I smoothed out the wall and repainted it.
- 二人は凸凹コンビと呼ばれている。Futari wa dekoboko konbi to yobarete iru.The two are called the odd couple.
- 凸レンズで光を集めた。Totsurenzu de hikari o atsumeta.I focused light with a convex lens.
Questions about 凸
How many strokes does 凸 have?
凸 is written in 5 strokes. The stroke order is shown at the top of this page.
What are the readings of 凸?
The on readings are totsu (トツ). 凸 has no kun reading in the Jōyō Kanji Table.
What JLPT level is 凸?
N1. The JLPT does not publish official kanji lists, so this level is a guide based on the official Test Content Specifications used through 2009.
About the JLPT level
The JLPT does not publish official lists of kanji for each level. The level on this page is a guide based on the official Test Content Specifications used for the test through 2009. The JLPT states that the current N1 is designed to match the former Level 1.
More JLPT N1 kanji
Qualities and conditions
Executive Japanese by CCN is one-on-one online Japanese for managers and directors doing business in Japan.
Sources
- Jōyō Kanji Table (常用漢字表), Agency for Cultural Affairs, Government of Japan, 2010: readings and special readings of 凸
- JLPT Frequently Asked Questions, The Japan Foundation and Japan Educational Exchanges and Services: how current levels match the former levels
- Stroke order diagrams are based on KanjiVG by Ulrich Apel, used under CC BY-SA 3.0. The diagrams on this page are shared under the same license.