The kanji 登 primarily conveys the idea of "to climb," "to ascend," or "to go up." It suggests movement upwards, reaching a higher position, or achieving a goal. It can also imply entry or registration.

・On-yomi (音読み): 　・ to (トウ) ・Kun-yomi (訓読み): 　・ のぼる (noboru)

⚫︎ 登山 (tozan) Translation: mountain climbing ⚫︎ 登録 (touroku) Translation: registration, enrollment ⚫︎ 登校 (toukou) Translation: going to school

The kanji 登 is a pictograph. It depicts the hands ✋ and feet 👣 of a person climbing a mountain or other elevated structure. The top part represents the person, and the bottom part represents the steps or the object being climbed. Over time, the form has simplified, but the core meaning of ascending remains.