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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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The proventriculi of these 2 females contained prey and brood patches were not evident.
But the distribution and histochemical properties of the mucins in their proventriculi were significantly different (Suganuma et al.,1981).
All Phasmatodea have ridged proventriculi lined or covered with small spines.