凹: the kanji for concave
凹 is a JLPT N1 kanji that means concave. Below are its readings, 4 common words and example sentences, all with audio.
Stroke order
凹 is written in 5 strokes. The red stroke is the one to write next, and the dot shows where it starts.
Words by reading
凹 has 1 reading in the official Jōyō Kanji Table. Below are 3 common words grouped by reading. Tap ▶ to hear each word (audio plays with a free account).
オウ (ou)
On reading.
| Word | Meaning |
|---|---|
| 凹レンズおうれんず · ōrenzu | concave lens |
| 凹凸おうとつ · ōtotsu | unevenness |
| 凹面鏡おうめんきょう · ōmenkyō | concave mirror |
Special readings to learn as whole words
These words use 凹, 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
- …近視の眼鏡には凹レンズを使う。Kinshi no megane ni wa ōrenzu o tsukau.Glasses for nearsightedness use concave lenses.
- 地面の凹凸が激しい。Jimen no ōtotsu ga hageshii.The ground is very uneven.
- 凹面鏡で太陽の光を集める。Ōmenkyō de taiyō no hikari o atsumeru.A concave mirror gathers sunlight.
- 車のドアが凸凹になった。Kuruma no doa ga dekoboko ni natta.The car door got dented.
- …理科の授業で凹レンズと凸レンズを比べた。Rika no jugyō de ōrenzu to totsurenzu o kurabeta.We compared concave and convex lenses in science class.
Questions about 凹
How many strokes does 凹 have?
凹 is written in 5 strokes. The stroke order is shown at the top of this page.
What are the readings of 凹?
The on readings are ou (オウ). 凹 has no kun reading in the Jōyō Kanji Table.
What JLPT level is 凹?
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 凹
- 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.