| Rh | a red or pink variety of garnet used as a gemstone |
|---|---|
| Rh | vain and empty boasting |
| Rh | a pink or red mineral consisting of crystalline manganese silicate |
| Rh | coextensive with the Rhodophyta: red algae |
| Rh | lower plants |
| Rh | a red photopigment in the retinal rods of vertebrates |
| Rh | 1 species |
| Rh | evergreen of Australia yielding a dark yellow wood |
| Rh | type genus of the family Rhodymeniaceae |
| Rh | coarse edible red seaweed |
| Rh | a family of protoctista |
| Rh | an order of dicotyledonous plants |