English Dictionary

heliacal

IPA（発音記号）

/hɪˈlaɪ.ə.kəl/

形容詞

稀用

(rare) Of or relating to the Sun, especially rising and setting with the sun.

日本語の意味

（珍しい用語）太陽に関する、特に太陽の出や沈みと関連している

The ancient astronomer recorded the star's heliacal appearance each year, marking the start of the planting season.

古代の天文学者は、その星が毎年日の出や日没に現れるのを記録し、それが種まきの時期の始まりを示した。

意味（1）

(rare) Of or relating to the Sun, especially rising and setting with the sun.

意味（2）

Of or relating to the rising of a star when it first becomes visible just before sunrise in the eastern sky, having previously been made invisible by sunlight, or the analogous situation of its setting just after sunset.