開戦（かいせん、kaisen）
- outbreak of war
Romaji:
Japanese:
Kana:
KAISEN
開戦
かいせん
開戦 (かいせん, romaji: kaisen) means "outbreak of war" in Japanese. It is a N1 High-level Noun word.
| Meaning: | outbreak of war |
| Level: | N1 High |
| Lexical Category: | Noun (名詞) |