The core meaning of the kanji 解 is to *untie, unravel, solve, or understand*. It implies a process of breaking something down, clarifying a situation, or finding a solution. This can apply to physical objects, puzzles, or abstract concepts. It also suggests the idea of releasing something or someone.

・On-yomi (音読み): カイ (kai) ・Kun-yomi (訓読み): と（く） (toku - to untie/solve), と（ける） (tokeru - to be untied/solved), ほど（く） (hodoku - to unravel)

⚫︎ 理解（りかい） Translation: Understanding; comprehension ⚫︎ 解決（かいけつ） Translation: Solution; resolution ⚫︎ 解散（かいさん） Translation: Dissolution; disbandment

The kanji 解 is a phono-semantic compound (形声文字, keisei moji). It combines two elements: ⚫︎ The left side is 角 (kaku), which originally represented the horn of an animal. ⚫︎ The right side is 刀 (katana, sword) - indicating an action. Together, it suggests "to use a sword to cut an animal horn (or something tied up), thus to release or unravel". Over time, it developed the meaning of solving problems, understanding things, and untying knots.