ruga

(rū'gə)
n. Biology, pl., -gae (-gē', -gī').
A fold, crease, or wrinkle, as in the lining of the stomach. Often used in the plural.

[Latin rūga.]

rugate ru'gate' (-gāt') adj.

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(rū'gə)
n., pl. -gae (-gē', -gī').

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

ru'gate' (-gāt') adj.

Pl. rugae [L.] a ridge or fold.

(rōō′gē, rōō′jē)
n.pl

The irregular ridges in the mucous membrane covering the anterior part of the hard palate.