sextansn.

Brit.

/ˈsɛkst(ə)nz/, U.S.

/ˈsɛkstənz/

Forms:

α. Old English 1500s– sextans, 1600s sextance.

β. (In sense 3, in Latin genitive form) 1700s– Sextantis /sɛkˈstantɪs/.

Origin: A borrowing from Latin. Etymon: Latin sextāns.

Etymology: < classical Latin sextāns (see sextant n.); later (in sense 3) adopted in post-classical Latin by J. Hevelius in Uranographia (1687) 29. Compare quadrans n. and later sextant n.The use of the Latin genitive case form as postmodifier in names of stars and constellations is a practice that originated in post-classical Latin. The word was evidently reborrowed in the late 16th cent., and there is no continuity of use with the Old English.

†1. Each of six parts into which something may be divided; spec. a sixth of a pound. Obsolete.Only in Old English.

ΚΠ

OE Byrhtferð Enchiridion (Ashm.) (1995) iii. iii. 180 Sextas uel sextans , þæt synt þa twegen dælas [sc. two twelfths], beoð þus gemearcod.

OE Byrhtferð Enchiridion (Ashm.) (1995) iii. iii. 184 Gyf þu todælst on syx þæt pund, þonne hatte se syxta dæl sextans and þa fife quincunx oððe cincus.

†2. The sixth part of a circle; cf. sextant n. 3. Obsolete.

ΘΚΠ

the world > relative properties > number > geometry > curve > [noun] > part of circle

arc1570

sextans1596

circumference1656

quadrant1660

quintant1684

sextant1730

octant1753

supplemental arc1754

multiple arc1802

explement1817

1596 J. Blagrave Astrolabium Vranicum sig. H2 The Sextans of a circle.

1656 J. Brown Descr. Carpenters-rule 137 The Dyal it self is in form of a Quadrant, Sextance, or Circle, according as you please.

1670 J. Brown Coll. of Centers 8 As 1 to the Radius of a Circle, so is half the arch of any portion, to the Area or Superficial Content of that Portion, proceeding to the Center, as a Quadrant, a Sextance, or the like part.

3. Astronomy. With capital initial. (The name of) an inconspicuous constellation lying on the celestial equator between Leo and Hydra; the Sextant. Also (in form Sextantis) used as postmodifier in the names of stars belonging to this constellation. Abbreviated Sex (without point).

ΚΠ

1715 tr. D. Gregory Elements Astron. I. ii. 292 Hevelius himself..has made up more new Constellations out of the unformed ones, than any of the Moderns besides, as is evident from his Firmament; where he has plac'd..the Sextans Uraniæ between Leo and Hydra.

1742 R. Long Astron. I. 175 Hevelius's constellations made out of unformed stars... Sextans..the Sextant.

1784 Philos. Trans. 1783 (Royal Soc.) 73 258 A considerable star following the 1st Sextantis, and another following the 7th, are not inserted [in Flamstead's catalogue].

1869 E. Dunkin Midnight Sky 21 Sextans, between Leo and Hydra, is a small constellation containing only stars of inferior magnitude.

1907 J. E. Gore Astron. Ess. xii. 208 If Ptolemy's star was really 15 Sextantis, it must have diminished in brightness.

1940 Sci. Monthly Nov. 399/2 Samples of the results are furnished by two uncatalogued systems, in Sextans and in Leo, which are intrinsically the faintest systems known.

2006 Daily Tel. 1 Jan. 22/7 In neighbouring Sextans, the two brightest stars, Alpha and Gamma, are so obscure that they do not even have popular names, which seems unfair in view of their brightness!

This is a new entry (OED Third Edition, December 2008; most recently modified version published online March 2022).

单词	sextans
释义	sextansn. Brit. /ˈsɛkst(ə)nz/, U.S. /ˈsɛkstənz/ Forms: α. Old English 1500s– sextans, 1600s sextance. β. (In sense 3, in Latin genitive form) 1700s– Sextantis /sɛkˈstantɪs/. Origin: A borrowing from Latin. Etymon: Latin sextāns. Etymology: < classical Latin sextāns (see sextant n.); later (in sense 3) adopted in post-classical Latin by J. Hevelius in Uranographia (1687) 29. Compare quadrans n. and later sextant n.The use of the Latin genitive case form as postmodifier in names of stars and constellations is a practice that originated in post-classical Latin. The word was evidently reborrowed in the late 16th cent., and there is no continuity of use with the Old English. †1. Each of six parts into which something may be divided; spec. a sixth of a pound. Obsolete.Only in Old English. ΚΠ OE Byrhtferð Enchiridion (Ashm.) (1995) iii. iii. 180 Sextas uel sextans , þæt synt þa twegen dælas [sc. two twelfths], beoð þus gemearcod. OE Byrhtferð Enchiridion (Ashm.) (1995) iii. iii. 184 Gyf þu todælst on syx þæt pund, þonne hatte se syxta dæl sextans and þa fife quincunx oððe cincus. †2. The sixth part of a circle; cf. sextant n. 3. Obsolete. ΘΚΠ the world > relative properties > number > geometry > curve > [noun] > part of circle arc1570 sextans1596 circumference1656 quadrant1660 quintant1684 sextant1730 octant1753 supplemental arc1754 multiple arc1802 explement1817 1596 J. Blagrave Astrolabium Vranicum sig. H2 The Sextans of a circle. 1656 J. Brown Descr. Carpenters-rule 137 The Dyal it self is in form of a Quadrant, Sextance, or Circle, according as you please. 1670 J. Brown Coll. of Centers 8 As 1 to the Radius of a Circle, so is half the arch of any portion, to the Area or Superficial Content of that Portion, proceeding to the Center, as a Quadrant, a Sextance, or the like part. 3. Astronomy. With capital initial. (The name of) an inconspicuous constellation lying on the celestial equator between Leo and Hydra; the Sextant. Also (in form Sextantis) used as postmodifier in the names of stars belonging to this constellation. Abbreviated Sex (without point). ΚΠ 1715 tr. D. Gregory Elements Astron. I. ii. 292 Hevelius himself..has made up more new Constellations out of the unformed ones, than any of the Moderns besides, as is evident from his Firmament; where he has plac'd..the Sextans Uraniæ between Leo and Hydra. 1742 R. Long Astron. I. 175 Hevelius's constellations made out of unformed stars... Sextans..the Sextant. 1784 Philos. Trans. 1783 (Royal Soc.) 73 258 A considerable star following the 1st Sextantis, and another following the 7th, are not inserted [in Flamstead's catalogue]. 1869 E. Dunkin Midnight Sky 21 Sextans, between Leo and Hydra, is a small constellation containing only stars of inferior magnitude. 1907 J. E. Gore Astron. Ess. xii. 208 If Ptolemy's star was really 15 Sextantis, it must have diminished in brightness. 1940 Sci. Monthly Nov. 399/2 Samples of the results are furnished by two uncatalogued systems, in Sextans and in Leo, which are intrinsically the faintest systems known. 2006 Daily Tel. 1 Jan. 22/7 In neighbouring Sextans, the two brightest stars, Alpha and Gamma, are so obscure that they do not even have popular names, which seems unfair in view of their brightness! This is a new entry (OED Third Edition, December 2008; most recently modified version published online March 2022). < n.OE
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