ampoule

noun
  1. A small sealed vial which is used to contain and preserve a sample, usually a liquid, for laboratory use or medical purposes. Ampoules are often made of glass and are hermetically sealed by melting the thin top with an open flame, and are opened by snapping off the neck. noun
    The nurse carefully broke the ampoule to administer the medication.
    Ampoules are commonly used to store injectable drugs in a sterile environment.
  2. A small bulbous glass vessel used in laboratories to contain a chemical sample. noun
    The chemist stored the volatile compound in an ampoule to prevent contamination.
    Ampoules are essential for handling sensitive chemical reactions safely.