substellaradj.

Brit.

/ˌsʌbˈstɛlə/, U.S.

/ˌsəbˈstɛlər/

Origin: Formed within English, by derivation. Etymons: sub- prefix, stellar adj.

Etymology: < sub- prefix + stellar adj.

1. Astronomy and Geography. Of a point on the earth: having a particular star in the zenith (directly overhead); such that a line from the centre of the earth to the star would pass through the point. Cf. sublunar adj. 4, subsolar adj. 3.

ΘΚΠ

society > travel > travel by water > directing or managing a ship > [adjective] > having star or moon vertically overhead

sublunar1892

substellar1892

the world > the universe > planet > primary planet > earth > [adjective] > position

sublunar1892

substellar1892

subastral1906

1892 C. W. C. Barlow & G. H. Bryan Elem. Math. Astron. vii. 187 If two stars are observed, the two substellar points (or places at which the stars are in the zenith) can be constructed.

1910 C. L. Poor Nautical Sci. vii. 154 To find the substellar point..it is necessary for the observer to know the sidereal time at which the observation is made.

1967 P. van de Kamp Princ. Astrometry ii. 19 The terrestrial longitude and latitude of a substellar point equal the Greenwich Hour Angle (GHA) and declination of the star.

2007 D. M. Harland First Men on Moon v. 156 The automatic alignment correctly identified the star's substellar point.

2. Astronomy. Smaller or less massive than a typical star.

ΘΚΠ

the world > the universe > star > kind of star > small star > [adjective]

substellar1949

1949 Astrophysical Jrnl. 109 537 A long series of astrometric observations should give further evidence as to the existence or nonexistence of bodies of substellar masses.

1969 Science 23 May 915/1 Typically we will have a small star, or even a body of substellar size, falling into a bigger star.

2007 D. A. Weintraub Is Pluto a Planet? xiv. 211 Apparently, the process that was good at making stars was not as good at making substellar objects, the hypothesized brown dwarfs.

This entry has been updated (OED Third Edition, June 2012; most recently modified version published online March 2022).

单词	substellar
释义	substellaradj. Brit. /ˌsʌbˈstɛlə/, U.S. /ˌsəbˈstɛlər/ Origin: Formed within English, by derivation. Etymons: sub- prefix, stellar adj. Etymology: < sub- prefix + stellar adj. 1. Astronomy and Geography. Of a point on the earth: having a particular star in the zenith (directly overhead); such that a line from the centre of the earth to the star would pass through the point. Cf. sublunar adj. 4, subsolar adj. 3. ΘΚΠ society > travel > travel by water > directing or managing a ship > [adjective] > having star or moon vertically overhead sublunar1892 substellar1892 the world > the universe > planet > primary planet > earth > [adjective] > position sublunar1892 substellar1892 subastral1906 1892 C. W. C. Barlow & G. H. Bryan Elem. Math. Astron. vii. 187 If two stars are observed, the two substellar points (or places at which the stars are in the zenith) can be constructed. 1910 C. L. Poor Nautical Sci. vii. 154 To find the substellar point..it is necessary for the observer to know the sidereal time at which the observation is made. 1967 P. van de Kamp Princ. Astrometry ii. 19 The terrestrial longitude and latitude of a substellar point equal the Greenwich Hour Angle (GHA) and declination of the star. 2007 D. M. Harland First Men on Moon v. 156 The automatic alignment correctly identified the star's substellar point. 2. Astronomy. Smaller or less massive than a typical star. ΘΚΠ the world > the universe > star > kind of star > small star > [adjective] substellar1949 1949 Astrophysical Jrnl. 109 537 A long series of astrometric observations should give further evidence as to the existence or nonexistence of bodies of substellar masses. 1969 Science 23 May 915/1 Typically we will have a small star, or even a body of substellar size, falling into a bigger star. 2007 D. A. Weintraub Is Pluto a Planet? xiv. 211 Apparently, the process that was good at making stars was not as good at making substellar objects, the hypothesized brown dwarfs. This entry has been updated (OED Third Edition, June 2012; most recently modified version published online March 2022). < adj.1892
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