Meaning of hemicyclium


Pronunciation: (hem"i-sik'lē-um), [key]
— n.
  1. a sundial in the form of a concave quarter sphere having a rodlike gnomon lying within one radius and marked on its surface with arcs that lie in the same plane as the gnomon.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.