- glaucousOf a pale grey or bluish-green, especially when covered with a powdery residue.
- glaucusAny member of the genus Glaucus of nudibranchiate mollusks, found in the warmer latitudes, swimming in the open sea, strikingly colored with blue and silvery white.
- uroglaucinA substance, apparently the same as indigo, occasionally found in the urine in degeneration of the kidneys. It is readily formed by oxidation or decomposition of indican.