1.
three thousand
The number three thousand. Note the sound change: さん + せん becomes さんぜん (the せ becomes voiced to ぜ).
The number three thousand. Features a sound change (rendaku) where せん becomes ぜん.
PRONUNCIATION:
さん + せん → さんぜん (the initial せ voices to ぜ). This is one of the irregular thousands.
THOUSANDS WITH SOUND CHANGES:
- 一千 (1,000): っ insertion
- 三千 (3,000): voicing (ぜ)
- 八千 (8,000): っ insertion
All other thousands (二千, 四千, 五千, 六千, 七千, 九千) keep the regular せん sound.
COMMON USAGE:
- 三千円: 3,000 yen
- 三千人: 3,000 people
- 三千メートル: 3,000 meters