ruga

[roo-guh]

noun, plural ru·gae

[roo-jee, -gee] /ˈru dʒi, -gi/.

Usually rugae. Biology, Anatomy. a wrinkle, fold, or ridge.

Origin of ruga

First recorded in 1765–75, ruga is from the Latin word rūga

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for rugae

Historical Examples of rugae

This section of the colon is lined with rugae precisely like those which are found in the caecum.
The Cambridge Natural History, Vol X., Mammalia
Frank Evers Beddard

British Dictionary definitions for rugae

ruga

noun plural -gae (-dʒiː)

(usually plural) anatomy a fold, wrinkle, or crease

Word Origin for ruga

C18: Latin

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for rugae

plural of ruga (1775), from Latin ruga "a wrinkle in the face," from PIE *rug-, variant of *reue- (see rough (adj.)).

rugae in Medicine

ruga

[rōō′gə]

n. pl. ru•gae (-gē′, -gī′)

A fold, crease, or wrinkle, as in the lining of the stomach. Often used in the plural.

Related formsru′gate′ (-gāt′) adj.