- a perforation in a structure.
- an operation to effect such an opening.
- Also called fenestration operation, Lempert operation. the creation of an artificial opening into the labyrinth of the ear to restore hearing loss from otosclerosis.
Examples from the Web for fenestration
It is formed by a fenestration of a primitively continuous cartilaginous coracoid plate (Hoffmann).The Works of Francis Maitland Balfour, Volume III (of 4)|Francis Maitland Balfour
The fenestration of this cathedral of St. Louis reign shows the national art in its prime.How France Built Her Cathedrals|Elizabeth Boyle O'Reilly
This change in the fenestration restored the building to its appearance as shown in Civil War photographs of the courthouse.The Fairfax County Courthouse|Ross D. Netherton
A rope with a bolt attached had been flung across and had caught in a fenestration of a projecting fragment of railing.The War in the Air|Herbert George Wells
The fenestration differs in several respects from that of similar houses erected a quarter century later.The Colonial Architecture of Philadelphia|Frank Cousins