fenestration

/ˌfɛnɪˈstreɪʃən/
noun
  1. The design and arrangement of windows and other openings in a building.
    • The building's fenestration includes large glass panels and narrow ventilation slits.
    • The architect's fenestration plan maximized sunlight in every room.
    • Old houses often have irregular fenestration because windows were added over time.
  2. A surgical procedure that creates an opening in a body part, such as a bone or membrane.
    • Fenestration of the cyst allowed the fluid to drain safely.
    • After the fenestration, the patient's hearing improved significantly.
    • The surgeon performed a fenestration to relieve pressure in the inner ear.
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