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单词 oct
释义

Octn.

Brit. /ɒkt/, U.S. /ɑk(t)/
Origin: Formed within English, by clipping or shortening. Etymon: Octans n.
Etymology: Shortened < Octans n., originally as a graphic abbreviation.
Astronomy.
The constellation Octans. Chiefly as postmodifier, designating a star of this constellation.
ΚΠ
1922 Trans. Internat. Astron. Union 1 158 The following resolutions were adopted [at the first General Assembly of the IAU]: (1) The exclusive use of the Latin names of the constellations. (2) The adoption of the three-letter abbreviations proposed by Profs. Hertzsprung and Russell for the representation of the 88 principal constellations... Oct Octans.
1964 D. H. Menzel Field Guide Stars & Planets vi. 246 The 5.5 magnitude star σ Oct is the southern pole star, very inconspicuous compared with Polaris.
1991 Publ. Astron. Soc. Pacific 103 305/1 Our 4-hr light curve.., obtained when BE Oct was at a V magnitude of 19.4, showed 0.2 mag flickering.
This is a new entry (OED Third Edition, March 2004; most recently modified version published online March 2022).

oct.adj.

Origin: Formed within English, by clipping or shortening. Etymon: octavo adj.
Etymology: Shortened < octavo adj.
Obsolete. rare.
= octavo adj.
ΘΚΠ
society > communication > book > kind of book > size of book > [adjective] > octavo
octavoa1696
oct.a1852
a1852 T. Moore Lit. Advt. v Enough to fill handsomely Two Volumes, oct.
This is a new entry (OED Third Edition, March 2004; most recently modified version published online June 2018).
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n.1922adj.a1852
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更新时间:2024/12/24 2:40:15