adj. Astron. relating to or near the sun. heliacal rising (or setting) the first rising (or setting) of a star after (or before) a period of invisibility due to conjunction with the sun.
[ LL heliacus f. Gk heliakos f. helios sun ]
adj. Astron. relating to or near the sun. heliacal rising (or setting) the first rising (or setting) of a star after (or before) a period of invisibility due to conjunction with the sun.
[ LL heliacus f. Gk heliakos f. helios sun ]
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012