| fenestra of the cochlea | An opening on the medial wall of the middle ear leading into the cochlea, closed in life by the secondary tympanic membrane. Synonym: cochlear window, fenestra of the cochlea, fenestra rotunda, round window. (05 Mar 2000) |
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| fenestra of the vestibule | An oval opening on the medial wall of the tympanic cavity leading into the vestibule, closed in life by the foot of the stapes. Synonym: fenestra of the vestibule, fenestra ovalis, oval window, vestibular window. (05 Mar 2000) |
| fenestra ovalis | An oval opening on the medial wall of the tympanic cavity leading into the vestibule, closed in life by the foot of the stapes. Synonym: fenestra of the vestibule, fenestra ovalis, oval window, vestibular window. (05 Mar 2000) |
| fenestra rotunda | An opening on the medial wall of the middle ear leading into the cochlea, closed in life by the secondary tympanic membrane. Synonym: cochlear window, fenestra of the cochlea, fenestra rotunda, round window. (05 Mar 2000) |
| fenestra vestibuli | An oval opening on the medial wall of the tympanic cavity leading into the vestibule, closed in life by the foot of the stapes. Synonym: fenestra of the vestibule, fenestra ovalis, oval window, vestibular window. (05 Mar 2000) |
| fenestral | 1. Pertaining to a window or to windows. 2. <anatomy> Of or pertaining to a fenestra. Origin: L. Fenestra a window. Source: Websters Dictionary (01 Mar 1998) |
| fenestrate | Having openings or translucent areas. (09 Oct 1997) |
| fenestrated | <botany> A type of leaf anatomy with small perforation or transparent spots. Confined to a few tropical monocotyledons which grow on the island of Madagascar. (09 Oct 1997) |
| fenestrated capillary | A capillary, found in renal glomeruli, intestinal villi, and some glands, in which ultramicroscopic pores of variable size occur; usually these are closed by a delicate diaphragm, although diaphragms are lacking in at least some renal glomerular capillary's. (05 Mar 2000) |
| fenestrated membrane | An elastic membrane, as in elastic laminae of arteries. (05 Mar 2000) |
| fenestrated sheath | A sheath with a window cut in the tip or lateral convexity, through which special cutting instruments can be passed. (05 Mar 2000) |
| fenestration | 1. The arrangement and proportioning of windows; used by modern writers for the decorating of an architectural composition by means of the window (and door) openings, their ornaments, and proportions. 2. <anatomy> The state or condition of being fenestrated. Source: Websters Dictionary (01 Mar 1998) |
| fenestration operation | A rarely used surgical procedure producing an opening from the external auditory canal to the membranous labyrinth to improve hearing in hearing impairment of the conduction type. (05 Mar 2000) |
| fenestration, labyrinth | The surgical creation of a new opening in the labyrinth of the ear for the restoration of hearing in cases of otosclerosis. (12 Dec 1998) |
| fenestrule | <zoology> One of the openings in a fenestrated structure. Origin: L. Fenestrula a little window, dim. Of fenestra a window. Source: Websters Dictionary (01 Mar 1998) |