An Etymological Dictionary of Astronomy and Astrophysics

To shut or keep out; to hinder from being included, considered, or accepted. → exclusion.

Etymology (EN): From L. excludere “to keep out, shut out, hinder,” from → ex- “out” + claudere “to close, shut,” → include.

Etymology (PE): Sokolândan, from so-, variant os-, → ex-, + kolândan “to shut,” → include.