The kanji 回 primarily conveys the idea of "times," "rounds," "frequency," or "to revolve/turn." It suggests an action or event happening repeatedly or in a circular motion. This core meaning is central to its various applications.

・On-yomi (音読み): カイ (kai) ・Kun-yomi (訓読み): まわ-る (mawa-ru - to turn, revolve), まわ-す (mawa-su - to turn something)

⚫︎ 一回 Translation: One time; once. ⚫︎ 次回 Translation: Next time. ⚫︎ 回転 Translation: Rotation; revolution; to spin.

The kanji 回 is a pictograph. It originally depicted an enclosed space with a central line representing something returning or revolving within it. The outer frame is thought to represent a walled enclosure. The lines inside show a turning or looping motion, implying repetition or a cyclical nature. Over time, the form simplified but retained the meaning of a turning or repeating action, or the measurement of those actions like “times” or “rounds”.