variable star(redirected from Variable-star)
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A star whose brightness varies because of internal changes, periodic eclipsing by a mutually orbiting star, or periodic transiting of orbiting planets or other circumstellar material.
(Celestial Objects) any star that varies considerably in brightness, either irregularly or in regular periods. Intrinsic variables, in which the variation is a result of internal changes, include novae, supernovae, and pulsating stars. See also eclipsing binary
a star that varies in brightness often in a regular period.
A star whose brightness changes periodically. The variation can occur because of internal changes in a single star or because a darker star periodically eclipses a brighter star in a binary star system.
A star that varies in brightness because of internal changes or because it is periodically eclipsed by other bodies.