proventriculus

noun

1
: the glandular or true stomach of a bird that is situated between the crop and gizzard
2
: a muscular dilatation of the foregut in most mandibulate insects that is armed internally with chitinous teeth or plates for grinding food
3
: the thin-walled sac in front of the gizzard of an earthworm

Examples of proventriculus in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
These findings included the first description of overproduction of scar tissue in the birds’ proventriculus – the part of their stomach where chemical digestion occurs. — Matthew Savoca, The Conversation, 21 Mar. 2023

Word History

Etymology

New Latin

First Known Use

circa 1836, in the meaning defined at sense 1

Time Traveler
The first known use of proventriculus was circa 1836

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Cite this Entry

“Proventriculus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/proventriculus. Accessed 26 Sep. 2026.

Medical Definition

proventriculus

noun
: the glandular or true stomach of a bird that is situated between the crop and gizzard
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