Occultation

1. n. Fig.: The state of being occult.
2. n. The hiding of a heavenly body from sight by the intervention of some other of the heavenly bodies; — applied especially to eclipses of stars and planets by the moon, and to the eclipses of satellites of planets by their primaries.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.