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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.

arance of a star or other luminary after having been invisible or obscured; -- opposed to occultation. Circle of perpetual apparition. See under Circle.

planet or star by the moon or a planet, though of the nature of an eclipse, is called an occultation. The eclipse of a small portion of the sun by Mercury or Venus is called a transit of the planet.

The reappearance of a heavenly body after an eclipse or occultation; as, the emersion of the moon from the shadow of the earth; the emersion of a star from behind the moon.

The dissapearance of a celestail body, by passing either behind another, as in the occultation of a star, or into its shadow, as in the eclipse of a satellite; -- opposed to emersion. Immersion lens, a microscopic objective of short focal distance designed to work with a drop of liquid, as oil, between the front lens a…

f a word. Limiting parallels (Astron.), those parallels of latitude between which only an occultation of a star or planet by the moon, in a given case, can occur.

cally, the act of measuring, with suitable instruments, some magnitude, as the time of an occultation, with a clock; the right ascension of a star, with a transit instrument and clock; the sun's altitude, or the distance of the moon from a star, with a sextant; the temperature, with a thermometer, etc.…

Same as Occultation.

ght. 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…