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单词 semi-nocturnal
释义 ˌsemi-nocˈturnal, a. Astr.
[semi- 6 b.]
Pertaining to, or accomplished in, half a night.
1594,1664[see semi-diurnal 1].1660H. More Myst. Godl. vii. xv. 342 The seminocturnal archs of the Ascension of the Ecliptick.1679Moxon Math. Dict. 87 By the help thereof [the Meridian], is found..the..Seminocturnal Arch of any Star.1819J. Wilson Dict. Astrol. 49 Subtract the seminocturnal arc of the star from its oblique ascension.
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