The Oxford Biblical Studies Online and Oxford Islamic Studies Online have retired. Content you previously purchased on Oxford Biblical Studies Online or Oxford Islamic Studies Online has now moved to Oxford Reference, Oxford Handbooks Online, Oxford Scholarship Online, or What Everyone Needs to Know®. For information on how to continue to view articles visit the subscriber services page.

Related Content

Related Overviews


More Like This

Show all results sharing this subject:

  • Art & Architecture


Show Summary Details



Quick Reference

Aperture (called day) through which daylight passes, e.g. a pane of glass, an area around which are mullions or transoms, or an opening defined by tracery-bars.

Reference entries