8 strokes
一斉
issei
simultaneous; all at once
斉唱
seishō
singing in unison
均斉
kinsei
symmetry; balance
Study kanji on LenGaki

Get the Android app
The app adds offline study, home-screen widgets, stroke-order tracing, speaking practice with pronunciation scoring, and an AI tutor that answers questions in context — none of which fits in a browser tab.