Japanese symbol for “neptune”
海王星
かいおうせい
Romaji: kaiousei
Neptune (planet)
In Japanese, neptune is 海王星, read かいおうせい (kaiousei).
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 Neptune (planet) (astron)
Kanji and stroke order
Other Japanese words for “neptune”
| Word | Reading | Meaning |
|---|---|---|
| ネプチューン | ネプチューン nepuchuun | Neptune (god) |
| 海神 | かいじん kaijin | sea god; Poseidon; Neptune |
| ネプトゥヌス | ネプトゥヌス neputunusu | Neptune (god) |
| 海人 | かいじん kaijin | sea god; Poseidon; Neptune |
Related words
Words that share a kanji.
| Word | Reading | Meaning |
|---|---|---|
| 海外 | かいがい kaigai | foreign; abroad; overseas |
| 海岸 | かいがん kaigan | seashore; coast; seaside |
| 海軍 | かいぐん kaigun | navy; naval force |
| 北海道 | ほっかいどう hokkaidou | Hokkaido (island, prefectural-level administrative unit) |
| 海上 | かいじょう kaijou | (on the) sea; surface of the sea |
| 海洋 | かいよう kaiyou | ocean; sea |
| 王子 | おうじ ouji | prince |
| 女王 | じょおう joou | queen; female monarch; female sovereign |
| 衛星 | えいせい eisei | (natural) satellite; moon |
See also: Chinese symbol for “neptune”.
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.