Also found in: Thesaurus, Medical, Encyclopedia.


a.1.Like a bottle or inflated bladder; bottle-shaped; swelling.
Ampullaceous sac
(Zool.) one of the peculiar cavities in the tissues of sponges, containing the zooidal cells.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
Mentioned in ?
References in periodicals archive ?
narrow ampullaceous vesicle in subapical deep and latero-external microsensillum, c.