The kanji 帯 primarily represents a "belt," "sash," or "band" used to secure clothing or to hold something in place. It can also imply something that surrounds or encircles, similar to a belt. This concept extends to figurative meanings like a "region," "zone," or "area" that something occupies or encompasses. The core idea is about something that wraps around, connects, or defines a boundary.

・On-yomi (音読み): たい (tai) ・Kun-yomi (訓読み): おび (obi)

⚫︎ ベルト帯 Translation: belt ⚫︎ 時間帯 Translation: time zone ⚫︎ 熱帯 Translation: tropics

The kanji 帯 is a phono-semantic compound (形声文字, keisei moji). The left side is the radical, which means "cloth" or "towel." The right side indicates the sound. Therefore, 帯 originally depicted a piece of cloth being used as a belt or band. Over time, the character evolved to encompass various forms of bands, belts, and the things that they could represent.