The kanji 亜 generally conveys the meaning of "second," "next," "Asia," or "inferior." It often indicates a position just below or close to something else, or a secondary rank. It can also refer to the continent of Asia.

・On-yomi (音読み): ア (a) ・Kun-yomi (訓読み): None, but it often combines with other kanji to form words.

⚫︎アジア Translation: Asia ⚫︎亜鉛 Translation: Zinc ⚫︎亜熱帯 Translation: Subtropical

The kanji 亜 is a pictograph. It depicts a person with a hunched back. The original meaning was "second" or "inferior" representing someone or something coming after or below another. Over time, its meaning expanded to include a reference to Asia, potentially due to the continent's geographic relationship to China and its secondary, relative position.