ampoule
UK[ˈæmpuːl]US[ˈæmˌpjuːl]
n
a small sealed glass capsule containing a measured quantity of a liquid, especially for injection.
Etymology
The word 'ampoule' entered English in the late 19th century from the French word ampoule, which itself derives from the Latin ampulla, meaning a small, two-handled flask or bottle. This Latin term is a diminutive of amphora, a large jar used in antiquity for storing wine or oil. The journey traces further back to the Greek amphoreus, a shortened form of amphiphoreus, literally meaning "carried on both sides," from amphi- (on both sides) and pherein (to carry), referring to the vessel's two handles. Thus, the modern, highly specific meaning of a small, sterile glass capsule for medicine evolved from the ancient concept of a portable, handled container for liquids.
Analysis
The word is a simplex loanword from French. Its spelling and form are borrowed as a whole unit into English.
Examples
The nurse broke the neck of the ampoule to draw the vaccine into the syringe.
The medication is supplied in single-dose ampoules to ensure sterility.
He carefully snapped open the glass ampoule containing the essential oil.