An Etymological Dictionary of Astronomy and Astrophysics

An image made up of several individual images of relatively short exposure times which are added together in order to produce a final image of higher quality.

Etymology (EN): Co-added, from → co- “together” + added p.p. of → add; → image.

Etymology (PE): Tasvir, → image; hamafzudé from ham- “together”, → com-, + afzudé p.p. of afzudan, → add.