最終更新日：2024/08/04

(astronomy) The span of time between successive heliacal risings of the star Sirius, equivalent to almost precisely 365¼ days.

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Sothic year

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Sothic year

noun

(astronomy) The span of time between successive heliacal risings of the star Sirius, equivalent to almost precisely 365¼ days.

意味（1）

(astronomy) The span of time between successive heliacal risings of the star Sirius, equivalent to almost precisely 365¼ days.