Pronunciation: (lOO'nu), [key]
1. the ancient Roman goddess personifying the moon, sometimes identified with Diana.
2. (in alchemy) silver.
3. (l.c.) Also,lunette. Eccles.the crescent-shaped receptacle within the monstrance, for holding the consecrated Host in an upright position.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.