Ampul

n. 1. a small glass bottle which has been or can be sealed hermetically by application of flame to a narrow opening at the top. aAn ampule usually has a narrow constriction near the top which can be scored and easily broken to open the ampule. Once opened, they cannot be hermetically re-sealed; thus the quantity contained is usually that which is to be used at once or within a short time. The contents are often sealed under vacuum to retard degradation by air.
Syn. -- phial, vial, ampoule [ WordNet 1.5 ]

2. an ampule, or vial resembling an ampule, which contains a drug. [ PJC ]

‖ n.; pl. Ampullæ [ L. ] 1. (Rom. Antiq.) A narrow-necked vessel having two handles and bellying out like a jug. [ 1913 Webster ]

2. (Eccl.) (a) A cruet for the wine and water at Mass. (b) The vase in which the holy oil for chrism, unction, or coronation is kept. Shipley. [ 1913 Webster ]

3. (Biol.) Any membranous bag shaped like a leathern bottle, as the dilated end of a vessel or duct; especially the dilations of the semicircular canals of the ear. [ 1913 Webster ]

a. [ L. ampullaceus, fr. ampulla. ] Like a bottle or inflated bladder; bottle-shaped; swelling. Kirby. [ 1913 Webster ]

Ampullaceous sac (Zool.), one of the peculiar cavities in the tissues of sponges, containing the zooidal cells. [ 1913 Webster ]

{ } a. Resembling an ampulla. [ 1913 Webster ]

{ a. Having an ampulla; flask-shaped; bellied. [ 1913 Webster ]