follow Dictionary.com

What's the difference between i.e. and e.g.?

heliacal

[hi-lahy-uh-kuh l] /hɪˈlaɪ ə kəl/
adjective, Astronomy
1.
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, heliac
[hee-lee-ak] /ˈhi liˌæk/ (Show IPA)
.
Origin
1600-1610
1600-10; < Late Latin hēliac(us) (< Greek hēliakós; see heli-1, -ac) + -al1
Related forms
heliacally, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Word Origin and History for heliacal
adj.

"pertaining to the sun," c.1600, with -al (1) and Greek heliakos "of the sun," from helios "sun" (see sol). The heliacal year is reckoned from the heliacal rising of Sirius; thus it also is known as the canicular year.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Difficulty index for heliacal

Few English speakers likely know this word

Word Value for heliacal

13
15
Scrabble Words With Friends

Nearby words for heliacal