ローマ字
ローマじ · roomaji · JLPT N2 · noun
Roman letters
🔤 ローマ (Rome) + 字 (letter) = letters from Rome, the Latin alphabet
ローマ is the Japanese word for Rome, and 字 means character or letter. ローマ字 is the Latin alphabet used to write Japanese sounds in Roman letters.
字 — roof 宀 + child 子
Originally depicted a child 子 under a roof 宀, suggesting birth or rearing a child in the home. The meaning later extended to 'to give birth, nurture' and then to 'written character', since characters were seen as offspring derived from earlier pictographs.