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plural ampullas or ampullae
(historical) An Ancient Roman two-handled vessel.
A vessel for containing consecrated wine or oil. quotations examples
Miraculously moist, the chrism was kept in an ampulla in Reims cathedral where the coronations of the kings of France were held.
2002, Colin Jones, The Great Nation, Penguin, published 2003, page 8
(anatomy) The dilated end of a duct. examples
(botany) The spongiole of a root. examples