[f. L. corrūgāt- ppl. stem of corrūgāre to wrinkle, f. cor- (com-) intensive + rūgāre to wrinkle f. rūga wrinkle.]
trans. To wrinkle (the skin), contract into wrinkles; hence gen. to draw, contract or bend into parallel folds or ridges; to mark with ridges and furrows.
1620. Venner, Via Recta (1650), 129. Salt exciteth the appetite by corrugating the mouth of the stomach.
1626. Bacon, Sylva, § 964. Cold and Drinesse do (both of them) Contract and Corrugate.
1676. Phil. Trans., XI. 676. To soften and smooth the Sinuosities of the stomach … that had by long abstinence been much corrugated.
1718. Quincy, Compl. Disp., 95. Whatsoever … acts as a Stimulus, and crisps and corrugates the Fibres.
1786. trans. Beckford’s Vathek (1834), 97. The haughty forehead of the intrepid princess became corrugated with agony.
1839. Todd, Cycl. Anat., II. 222 b. It [the muscle] corrugates the skin of the nose transversely.
1880. Haughton, Phys. Geogr., ii. 50. Tangential thrusts, which corrugate and wrinkle its surface into mountain chains and deep-sea-valleys.
c. intr. (for refl.) = To become corrugated.
1753. N. Torriano, Gangr. Sore Throat, p. xiv. Whether the Matter corrugates, or impostumates.
1853. Kane, Grinnell Exp., xvi. (1854), 122. The elastic material corrugated before the enormous pressure.
Hence Corrugating vbl. sb. Corrugating machine, a machine for making corrugated iron.
1874. in Knight, Dict. Mech.
