• 氏うじ — family name / clan
• 氏名しめい — full name
• 氏族しぞく — clan / kin group
• 姓氏せいし — surnames
• 諸氏しょし — gentlemen / all of you (formal)

This character originally depicted a tool used for cutting — later borrowed for the meaning “clan” or “family name.” It’s the root of modern surname-related words in Japanese.

氏名しめいを 記入きにゅうしてください。
Please fill in your full name.

彼かれの氏うじは 藤原ふじわらです。
His family name is Fujiwara.

古代こだいの日本にほんでは 氏族しぞくが重要じゅうようでした。
In ancient Japan, clans were very important.

🎧 The kun reading うじ is typically used in names and classical contexts. The on reading シ appears in modern compounds like 氏名 or 氏族.