Definition of proventriculus
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
Keep scrolling for more
Keep scrolling for more
Test Your Vocabulary
Who Knew?
-
- What is a ruelle?

Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Word Games
Share proventriculus
Time Traveler for proventriculus
The first known use of proventriculus was circa 1836
See more words from the same year