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ampullaceous

adjective
am·​pul·​la·​ceous | \-ˌpu̇--ˌpə-\

Definition of ampullaceous 

: resembling an ampulla : shaped like a flask or bladder

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First Known Use of ampullaceous

1776, in the meaning defined above

History and Etymology for ampullaceous

Latin ampullaceus, from ampulla + -aceus -aceous

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The first known use of ampullaceous was in 1776

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