A small sealed glass vial containing a sterile liquid or substance for medical injection or use; variant of ampoule.
From ampoule with variant spelling. Ultimately from Latin ampulla (a flask or vessel). This Americanized spelling drops the -o before the -u.
English spelling loves American shortcuts—compare 'color' to 'colour,' and 'ampule' to 'ampoule.' Doctors in different countries write it differently, but they're all grabbing the same tiny glass bottle.
Complete word intelligence in one call. Free tier — 50 lookups/day.