heliacal

[ hi-lahy-uh-kuh l ]
/ hɪˈlaɪ ə kəl /

adjective Astronomy.

pertaining to or occurring near the sun, especially applied to such risings and settings of a star as are most nearly coincident with those of the sun while yet visible.
Also he·li·ac [hee-lee-ak] /ˈhi liˌæk/.

Origin of heliacal

1600–10; < Late Latin hēliac(us) (< Greek hēliakós; see heli-1, -ac) + -al1

OTHER WORDS FROM heliacal

he·li·a·cal·ly, adverb

Words nearby heliacal

helgi, helgoland, heli-, heli-boarding, heli-skiing, heliacal, heliacal rising, helianthemum, helianthine b, helianthus, heliborne