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Pronunciation: sak'yul


  1. The smaller of the two membranous sacs in the vestibule of the labyrinth, lying in the spheric recess; it is connected with the cochlear duct by a very short tube, the ductus reuniens, and with the utriculus by the beginning of the endolymphatic sac and the utriculosaccularis duct that joins it.
  2. The immense bag-shaped structure formed by peptidoglycans as part of the cell wall of certain microorganisms.

Synonym(s): sacculusTA, sacculus proprius, sacculus vestibuli

[L. sacculus]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.