Definition of proventriculus
plural proventriculi
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\ˌprō-ven-ˈtri-kyə-ˌlī, -ˌlē\
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
