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n. pl. pro·ven·tric·u·li (-lī′)
1. The division of the stomach in birds that secretes digestive enzymes and passes food from the crop to the gizzard.
2. A similar digestive chamber in certain insects and worms.

[pro- + Latin ventriculus, stomach, diminutive of venter, belly.]

pro′ven·tric′u·lar (-lər) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


n, pl -triculi (-ˈtrɪkjʊˌlaɪ)
1. (Zoology) the first part of the stomach of birds, the gizzard
2. (Zoology) the thick muscular stomach of crustaceans and insects; gizzard
[C19: from New Latin, from Latin pro-1 + ventriculus little belly, from venter belly]
ˌprovenˈtricular adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌproʊ vɛnˈtrɪk yə ləs)

n., pl. -tric•u•li (-ˈtrɪk yəˌlaɪ)
1. the glandular portion of the stomach of birds, in which food is partially digested.
2. the thin-walled front part of the stomach in certain invertebrates.
pro`ven•tric′u•lar, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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Sixteen kinds of tissues samples were collected from liver, heart, spleen, kidney, lung, cerebellum, cerebrum, proventriculus, gizzard, intestine, large intestine, abdominal fat, subcutaneous fat, pituitary, hypothalamus, and breast muscle, and frozen in liquid nitrogen until being used.
(9) However, significant pathologic changes of the air sacs, lungs, liver, proventriculus, and myocardium, leading to death, have been attributed to Serratospiculum amaculata, (8) Birds with severe infections have associated pneumonia, airsacculitis, and early lesions of aspergillosis.
Organs were weighed to determine relative weight of organs (proventriculus, gizzard, small intestine, pancreas, heart, and liver).
A variable degree of congestion and hemorrhages were evident in different organs including trachea, lungs, proventriculus, cecal tonsil and kidney.
and larvae (Nematoda: Acuariidae) in the proventriculus of Larus dominicanus Lichtenstein (Aves: Laridae), with notes on their attachment.
Like other vertebrates a tubular gastrointestinal system but with variations including crop (for feed storage), proventriculus (simple stomach), gizzard and paired ceca is found in poultry (Duke, 1986).
"It is in the crop and proventriculus where the feeds settle down after digestion and before proceeding to the intestines," Asis said in the vernacular.
The tissues of trachea, spleen, brain, lung, liver, bursa of Fabricius, proventriculus, and caecal tonsils were collected and fixed in 10% buffered formalin.
Yellow, firm plaques of exudate covered the outer surface of the tracheal bifurcation and the cranial serosal aspect of the proventriculus. Dozens of 1-2 mm raised yellow-tan, less sharply defined foci, sometimes with a fuzzy surface, covered the serosal surfaces of abdominal (Figure 2) and cranial thoracic viscera and the lining of cervical air sacs.
(2015) demonstrated that ghrelin mRNA was located primarily in the proventriculus, followed by the liver and other tissues in E18 chicken embryos.
At 7 days of age, weight of breast, yolk residue, liver, pancreas, gizzard + proventriculus and small intestine were obtained immediately after dissection and removal of the exogenous tissues to calculate the relative weight by the formula: relative weight = (organ weight/body weight) X 100.
The pharynx is approximately 6 setigers in length and the proventriculus has 34 muscle bands.