斉 means “all together, uniform”

せい · sei

Also: adjusted, alike, equal, similar variety of

Kun'yomi (Japanese reading)

そろう, ひとしい, ひとしく, あたる, はやい

On'yomi (Chinese reading)

セイ, サイ

JLPT N1 · Taught in secondary school · 8 strokes

The story

Picture a row of rice plants with every ear standing at exactly the same height: 斉 is all together, all alike. 一斉に is all at once, and at school ceremonies 国歌斉唱 is everyone singing the national anthem in unison.

Used in 一斉 (issei, all at once), 一斉送信 (issei soushin, sending to everyone), and 斉唱 (seishou, singing in unison)

More from Order & Rank

• 秩 order
• 衡 balance
• 逓 relay
• 逐 pursue
• 頓 tidy
• 汰 weed out
• 率 rate
• 整 arrange
• 級 grade
• 序 order

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Readings from KANJIDIC2, © EDRDG, CC BY-SA.