from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Of or pertaining to an umbra.
from The Century Dictionary and Cyclopedia
- Pertaining to an umbra.
- n. In the classification of the Paleozoic series of Pennsylvania, according to H. D. Rogers, a group of rocks of great thickness, belonging to the Carboniferous, and lying between the Seral or Millstone-grit and the Vespertine.
Sorry, no etymologies found.