Occultation \Oc`cul*ta"tion\, n. [L. occultatio a hiding, fr. occultare, v. intens. of occulere: cf.F. occultation. See Occult.]

1. (Astron.) 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.

2. Fig.: The state of being occult.

The reappearance of such an author after those long periods of occultation. --Jeffrey.

Circle of perpetual occultation. See under Circle.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Perpetual \Per*pet"u*al\, a. [OE. perpetuel, F. perp['e]tuel, fr. L. perpetualis, fr. perpetuus continuing throughout, continuous, fr. perpes, -etis, lasting throughout.]

Neverceasing; continuing forever or for an unlimited time; unfailing; everlasting; continuous.

Unto the kingdom of perpetual night. --Shak.

Perpetual feast of nectared sweets. --Milton.

Circle of perpetual apparition, or occultation. See under Circle.

Perpetual calendar, a calendar so devised that it may be adjusted for any month or year.

Perpetual curacy (Ch. of Eng.), a curacy in which all the tithes are appropriated, and no vicarage is endowed. --Blackstone.

Perpetual motion. See under Motion.

Perpetual screw. See Endless screw, under Screw.

Syn: Continual; unceasing; endless; everlasting; incessant; constant; eternal. See Constant.

Source: Webster's Revised Unabridged Dictionary (1913)