The kanji 斉 primarily conveys the ideas of "uniformity," "equal," "even," "equalize," "together," or "harmonious." It often implies things being aligned, ordered, or the same. It can also refer to a state of being in order or the act of making something uniform.

・On-yomi (音読み): ・サイ (sai) ・セイ (sei) ・Kun-yomi (訓読み): ・ひと(しい) (hito(shii)) - meaning "equal"

⚫︎ 斉一 Translation: Uniformity; standardization; evenness. ⚫︎ 斉唱 Translation: Singing in unison; a chorus. ⚫︎ 整斉 Translation: Orderliness; neatness; well-arranged.

The kanji 斉 is a phono-semantic compound (形声文字, keisei moji). The left side is a part of the character that means "grain" or "rice." It initially depicted grain stalks. The right side is 刀(tō), meaning "knife." Initially, this meant to cut grain, which then evolved to mean making things equal. This is the origin of the sense of "equal" or "uniform."