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Meaning of proventriculus

pro•ven•tric•u•lus

Pronunciation: (prō"ven-trik'yu-lus), [key]
— pl. -tric•u•li
  1. the glandular portion of the stomach of birds, in which food is partially digested before passing to the ventriculus or gizzard.
  2. a similar enlargement in the alimentary tract of several invertebrates, variously modified for maceration and digestion.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.