Am`pul·la'ceous adjective [ Latin ampullaceus , from ampulla .] Like a bottle or inflated bladder; bottle-shaped; swelling. Kirby. Ampullaceous sac (Zoology) , one of the peculiar cavities in the tissues of sponges, containing the zooidal cells. Found on http://www.encyclo.co.uk/webster/A/74
ampullaceous 1. Like a bottle or inflated bladder; bottle-shaped; swelling. 2. One of the peculiar cavities in the tissues of sponges, containing the zooidal cells. Found on http://www.wordinfo.info/words/index/info/view_unit/11/