a. [f. L. ampullāce-us (f. ampulla) + -OUS: see -ACEOUS. Cf. mod.Fr. ampullacé.] Having the form or character of an ampulla; bottle-shaped, inflated, swelling.
1776. M. da Costa, Conchol., 81 (Jon.). Ampullaceous, or bellied.
1815. Kirby & Spence, Entomol. (1843), I. 98. It wounds us with … a simple incurved mucro terminating an ampullaceous joint.
1880. Gray, Bot. Text-Bk., 395. Ampullaceous, in the form of a bladder or short flask.
