Sothis

[ soh-this ]

/ ˈsoʊ θɪs /

the name for the star Sirius, the Dog Star, given by the ancient Egyptians.

Origin of Sothis

< Greek Sṓthis < Egyptian spdt

So·thic

[soh-thik, soth-ik] /ˈsoʊ θɪk, ˈsɒθ ɪk/, adjective

Their year originally began when the rapid rising of the Nile coincided with the rising of the star Sirius, called by them Sothis.

Archology and the Bible |George A. Barton
Astronomical data, especially the heliacal risings of Sothis recorded by dates of their celebration in the vague year.

Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 1 |Various
This was based upon the heliacal rising of Sirius (Sothis) coincident with the beginning of the inundation.

The World's Progress, Vol. I (of X) |Various
The twelve months completed, a new year began, whose birth was heralded by the rising of Sothis in the early days of August.

History Of Egypt, Chalda, Syria, Babylonia, and Assyria, Volume 1 (of 12) |G. Maspero

We have already become acquainted with this Sothis period (p. 29 ff).

The History of Antiquity, Vol. I (of VI) |Max Duncker

Sothis

/ (ˈsəʊθɪs) /

another name for Sirius

Greek; see Sothic