[am-pyool, -pool]
noun Medicine/Medical.
a sealed glass or plastic bulb containing solutions for hypodermic injection.
Also, ampul, ampoule.

1175–1225; < French < Latin ampulla ampulla; replacing Middle English ampulle < Old French < Latin; replacing Old English ampella, ampulla < Latin Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
ampoule or esp (US) ampule (ˈæmpuːl, -pjuːl)
med a small glass vessel in which liquids for injection are hermetically sealed
ampule or esp (US) ampule

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Example sentences
The user breaks the ampule and squeezes the gel onto a brush tip.
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