Japanese symbol for “aperture”
口径
こうけい
Romaji: koukei
aperture; bore; calibre; caliber
In Japanese, aperture is 口径, read こうけい (koukei).
Before using these characters for a tattoo, check them with a native speaker. Dictionary words often have several meanings, and the right choice depends on context.
Meanings
- n aperture; bore; calibre; caliber
Kanji and stroke order
Other Japanese words for “aperture”
| Word | Reading | Meaning |
|---|---|---|
| 隙間 | すきま sukima | gap; opening; aperture |
| 絞り | しぼり shibori | aperture; aperture stop; stop |
| 開口 | かいこう kaikou | opening; aperture (e.g. camera) |
| 空隙 | くうげき kuugeki | vacant space; aperture; gap |
| 開口部 | かいこうぶ kaikoubu | aperture |
Related words
Words that share a kanji.
| Word | Reading | Meaning |
|---|---|---|
| 人口 | じんこう jinkou | population |
| 悪口 | わるぐち waruguchi | (verbal) abuse; speaking ill of people; bad-mouthing |
| 窓口 | まどぐち madoguchi | counter; window; teller window |
| 出口 | でぐち deguchi | exit; way out |
| 入り口 | いりぐち iriguchi | entrance; entry; gate |
| 口座 | こうざ kouza | account (e.g. bank) |
| 直径 | ちょっけい chokkei | diameter |
| 半径 | はんけい hankei | radius |
See also: Chinese symbol for “aperture”.
Data: JMdict (CC BY-SA 4.0); KANJIDIC2 (CC BY-SA 4.0); KanjiVG (CC BY-SA 3.0); wordfreq (CC BY-SA 4.0 (data)). Retrieved 2026-10-22.