plicae circulares
noun plural
plicae cir·cu·la·res
| \ -ˌsər-kyə-ˈlar-(ˌ)ēz
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Medical Definition of plicae circulares
: the numerous permanent crescentic folds of mucous membrane found in the small intestine especially in the lower part of the duodenum and the jejunum
— called also valvulae conniventes