heliacal

• adj. 太阳的；与太阳同时升落的；接近太阳的

来自希腊语Helios,太阳神，词源同Sol,sun.

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.