'Heliac' definitions:
Definition of 'heliac'
(from WordNet)
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; "the heliacal rising of the Dog Star"; "the heliacal or Sothic year is determined by the heliacal rising of Sothis (the Egyptian name for the Dog Star)" [syn: heliacal, heliac]
Definition of 'Heliac'
From: GCIDE
- Heliac \He"li*ac\, a. Heliacal. [1913 Webster]