| roughstrings | Pieces of undressed timber put under the steps of a wooden stair for their support. Source: Websters Dictionary (01 Mar 1998) |
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| roughtail | <zoology> Any species of small ground snakes of the family Uropeltidae; so called from their rough tails. Source: Websters Dictionary (01 Mar 1998) |
| Roughton, Francis | <person> British scientist, 1899-1972. See: Roughton-Scholander apparatus, Roughton-Scholander syringe. (05 Mar 2000) |
| Roughton-Scholander apparatus | A syringe-like device for analyzing the respiratory gases in a small sample of blood. Synonym: Roughton-Scholander syringe. (05 Mar 2000) |
| Roughton-Scholander syringe | A syringe-like device for analyzing the respiratory gases in a small sample of blood. Synonym: Roughton-Scholander syringe. (05 Mar 2000) |