fissula

fissula
Diminutive of fissure; a small fissure or cleft.
- f. ante fenestram [TA] minute, slitlike passage in the labyrinthine wall of the tympanic cavity, extending obliquely from the region of the cochleaform process to the vestibule of the bony labyrinth, anterior to the oval window; it is considered to be an extension of the perilymphatic space, but is occupied by a small band of connective tissue that is continuous with the mucosa of the tympanic cavity.

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fis·su·la (fisґu-lə) [L., dim. of fissura] a little cleft.

Medical dictionary. 2011.

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