From Longman Dictionary of Contemporary Englishvialvi‧al /ˈvaɪəl/ (also phial British English) noun [countable] formal 
TDa very small bottle used for medicine, perfume etc
TDa very small bottle used for medicine, perfume etcExamples from the Corpus
vial• It took 35 vials of anti-venom to save his life.• In the end it took 52 vials before the reaction stopped, but we saved the guy s arm.• a vial of pure cinnamon oil• They will mate in vials and breed in a couple of weeks.• The longer they stayed in the vial, the hotter they became.• Of course, she knew the minute the vial was opened because the aroma was very strong.• In his rear-view mirror Jed saw the vial being passed round.• Which I believe makes it that much more powerful than showing the vial and whatever.• Each is paid $ 40 to give an hourlong interview and donate two vials of blood.Origin vial (1300-1400) phial 