Definition of "fenestration" [fen•es•tra•tion]

• The design and placement of windows in a building. (noun)
• An opening in the surface of a structure, as in a membrane. (noun)
• The surgical creation of an artificial opening in the bony part of the inner ear so as to improve or restore hearing. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "I do hope you won't mind me butting in here: I think the fenestration is of less importance than the existence of the Turdus Merula just visible under the fourth fence rail on the right."
• "Unfortunately, the kids 'space could have been much improved if the building design hadn't been negatively impacted by foolish conceits about historic design which determined the fenestration of the basement wall on the south side."
• "John: is changing his idea of making fenestration translucent on the ground level and transparent on the top."