heliac
1. [ adjective ] pertaining to or near the sun; especially the first rising of a star after and last setting before its invisibility owing to its conjunction with the sun
Synonyms: heliacal
Examples:

"the heliacal or Sothic year is determined by the heliacal rising of Sothis (the Dog Star)

Related terms: sun sun
Similar spelling:   Hellwig
  Helix
  Helga
  Heliozoa
  Helios
  Heilig