Definition of Alioth
astronomy
:a variable star of the first magnitude that is seen in the handle of the Big Dipper and is one of the two brightest stars in that constellation
- Alioth, otherwise known as HD 112185, is a variable star with a very well-defined period, its brightness changing by 0.03 magnitude every 5.09 days.
- —Shireen Gonzaga, Astronomy, December 1991
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