The kanji 温 primarily means "warm," "heat," or "mild." It conveys a sense of moderate temperature, comfort, and sometimes gentleness. It can also refer to being kind or friendly.

・On-yomi (音読み): オン (on) ・Kun-yomi (訓読み): あたた.かい (atata.kai - warm), あたた.まる (atata.maru - to warm up), あたた.める (atata.meru - to warm up/heat)

⚫︎温度 Translation: Temperature ⚫︎温泉 Translation: Hot spring ⚫︎温暖 Translation: Warmth; mildness

The kanji 温 is a phono-semantic compound (形声文字 - keisei moji). It combines the semantic element 氵 (水 - mizu - water), indicating its relation to fluids, with the phonetic element 昷 (on). 昷 originally represented a vessel for steaming or warming something. Therefore, the character's construction visually represents water (氵) being warmed (昷). The historical development shows the character gradually evolving to represent the concept of warmth.