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 ]
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