The Collaborative International Dictionary of English v.0.48:
ampoule \ampoule\ n. 1. same as ampule. Syn: phial, vial, ampule, ampul [WordNet 1.5]WordNet (r) 3.0 (2006):
ampoule n 1: a small bottle that contains a drug (especially a sealed sterile container for injection by needle) [syn: phial, vial, ampule, ampul, ampoule]