Heliacal

[hi:'laiәkәl]

Definition

(adj.) 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)' .

Checked by Elisha--From WordNet

Definition

(a.) Emerging from the light of the sun, or passing into it; rising or setting at the same, or nearly the same, time as the sun.

Typist: Serena

Definition

adj. (astron.) emerging from the light of the sun or passing into it.—adv. Helī′acally.

Edited by Donnie