| 单词 | heliacal |
| 释义 | heliacal —heliacally, adv. /hi luy"euh keuhl/, adj. Astron. pertaining to or occurring near the sun, esp. 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'/. [1600-10; < LL heliac(us) ( < Gk heliakós; see HELI-1, -AC) + -AL1] |
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