extension; prolongation
General noun for extending or prolonging something, such as time, a deadline, or a physical object.
I want to avoid prolonging the meeting.
I applied for an extension of the deadline.
Specifically refers to photographic enlargement; often used in the compound 引き伸ばし写真.
See also: 引き伸ばし写真
I ordered an enlargement of this photo.
He keeps putting off giving his reply.
I had this photo enlarged to poster size.