extension of visa permit
Official term used in Japanese immigration procedures for extending one's period of stay.
Applications for extension of visa permit are made at the immigration bureau.
Refers to the status of residence itself, while 在留期間更新許可 is specifically the permission to extend that status.
A more general and colloquial term for visa renewal, not limited to the official immigration procedure.
Compound of 在留 (residence), 期間 (period), 更新 (renewal), and 許可 (permission).