rugaladj.
/ˈruːɡl/, U.S. /ˈruɡ(ə)l/ Anatomy, Zoology, and Botany.
Characterized by wrinkles or ridges; of the nature of a ruga or rugae; = rugate adj. 1. Also: of or relating to a ruga or rugae.
ΘΚΠ
the world > life > biology > physical aspects or shapes > projection or protuberance > [adverb] > ridged
rugate1846
rugal1874
1874 Jrnl. Linn. Soc.: Bot. 14 316 The stipes..unicellular and monosiphonous, with transverse-rugal and thin reddish calcareous coat at the lower part.
1933 Amer. Speech 8 63/2 There is inconsistency in the use of dental ‘t’ and ‘d’, rugal ‘t’ and ‘d’ being frequently substituted.
1936 C. E. Kantner & R. West Phonetics (ed. 3) i. iii. 48 Attention should be drawn to the alveolar or rugal ridge which is the raised line of flesh found at the point where the teeth emerge from the gums.
1939 Amer. Jrnl. Cancer 35 597 Methods of roentgen examination of the esophagus and stomach... There may be..abnormality in the rugal markings.
1961 Brit. Med. Jrnl. 9 Sept. 668/1 Giant rugal hypertrophy of the stomach.
1998 Jrnl. Zoo & Wildlife Med. 29 468 (caption) Note the thickened, rugal pattern of the mucosa.
2004 Quality of Life Res. 13 1644/1 In females..loss of rugal folds..and lowering of the vaginal secretions may give rise to dyspareunia.
This entry has been updated (OED Third Edition, March 2011; most recently modified version published online March 2022).
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adj.1874