'alpha Canis Majoris' definitions:
Definition of 'alpha Canis Majoris'
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Dog Star \Dog" Star`\
Sirius, a star of the constellation Canis Major, or the
Greater Dog, and the brightest star in the heavens; -- called
also Canicula, and, in astronomical charts, {[alpha] Canis
Majoris}. See Dog days.
[1913 Webster]
