1.
hair (on the head); head hair
A formal term for the hair growing on one's head. Used in official, medical, and regulatory contexts.
Forms
頭 (head) + 髪 (hair).
Usage
A formal word used in official documents, school regulations, and medical contexts. In everyday speech, 髪 or 髪の毛 is used instead. 頭髪検査 (hair inspection) is a well-known practice in Japanese schools where students' hair is checked against dress code rules.