| rufterhood | <veterinary> A kind of hood for a hawk. Origin: Cf. Ruff a plaited collar. Source: Websters Dictionary (01 Mar 1998) |
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| ruga | Origin: L. A wrinkle; a fold; as, the rugae of the stomach. Source: Websters Dictionary (01 Mar 1998) |
| ruga gastrica | Characteristic folds of the gastric mucosa, especially evident when the stomach is contracted. Synonym: plicae gastricae, gastric folds, ruga gastrica. (05 Mar 2000) |
| ruga palatina | A masticatory vestige on the hard palate; one of several irregular, sometimes branching, crests of soft tissue that radiate from the region of the incisive papillae at their most anterior parts and extend a slight distance backward, crossing the hard palate and reaching laterally for variable distances. Synonym: plica palatina transversa, ruga palatina, transverse palatine ridge. (05 Mar 2000) |
| rugae of stomach | Characteristic folds of the gastric mucosa, especially evident when the stomach is contracted. Synonym: plicae gastricae, gastric folds, ruga gastrica. (05 Mar 2000) |
| rugae of vagina | A number of transverse ridges in the mucous membrane of the vagina. Synonym: rugae vaginales. (05 Mar 2000) |
| rugae vaginales | A number of transverse ridges in the mucous membrane of the vagina. Synonym: rugae vaginales. (05 Mar 2000) |
| rugal columns of vagina | Two slight longitudinal ridges, anterior and posterior, in the vaginal mucous membrane, each marked by a number of transverse mucosal folds. Synonym: columnae rugarum, vaginal columns. (05 Mar 2000) |
| rugger jersey vertebra | Appearance of a vertebral body with horizontal sclerotic bands adjacent to the endplates; associated with renal osteodystrophy. (05 Mar 2000) |
| rugine | <surgery> An instrument for scraping the periosteum from bones; a raspatory. Origin: F. Source: Websters Dictionary (01 Mar 1998) |
| rugitus | A rumbling sound in the intestines. See: borborygmus. Origin: L. A roaring, fr. Rugio, to roar (05 Mar 2000) |
| rugosa | <paleontology> An extinct tribe of fossil corals, including numerous species, many of them of large size. They are characteristic of the Paleozoic formations. The radiating septs, when present, are usually in multiples of four. See Cyathophylloid. Origin: NL. See Rugose. Source: Websters Dictionary (01 Mar 1998) |
| rugose | Deeply wrinkled. (09 Oct 1997) |
| rugosity | 1. The state of being thrown into folds or wrinkles. 2. A ruga. (05 Mar 2000) |
| rugous | Deeply wrinkled. (09 Oct 1997) |