What is like a bottle or inflated bladder; bottle-shaped; swelling. Kirby. Ampullaceous sac (Zoöl.), one of the peculiar cavities in the tissues of sponges, containing the zooidal cells called?

ampullaceous — Like a bottle or inflated bladder; bottle-shaped; swelling. Kirby. Ampullaceous sac (Zoöl.), one of the peculiar cavities in the tissues of sponges, containing the zooidal cells. (Webster's 1913.)

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