The core meaning of the kanji 乗乗 is "to ride," "to get on," or "to board." It implies the act of mounting or entering something, such as a vehicle (train, bus, etc.) or a living being (horse). It also extends to the idea of "to be multiplied by" in mathematics, signifying an increase or addition.

・On-yomi (音読み): ジョウ (jō) ・Kun-yomi (訓読み): の乗る (no乗ru)

⚫︎ 電車に乗る (densha ni no乗ru) Translation: To get on the train. ⚫︎ バスに乗車する (basu ni jōsha suru) Translation: To board the bus. ⚫︎ 二に三を乗じる (ni ni san o jōjiru) Translation: To multiply two by three (2 multiplied by 3).

The kanji 乗乗 is a pictophonetic compound. The top part, originally depicted as a person 人, now simplified to ノ represents someone or something. The bottom part 木 represents a tree or wood. The original meaning might have been related to climbing or getting onto a tree. Over time, the meaning expanded to encompass the broader concept of mounting or getting on something.