About The Word Astrolabe
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Astrolabe
| Astrolabe Definition And Meaning |
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What's The Definition Of Astrolabe?
[n] an early form of sextant
Synonyms | Synonyms for Astrolabe: Related Terms | Find terms related to Astrolabe: See Also | sextant Astrolabe In Webster's Dictionary \As"tro*labe\ ([a^]s"tr[-o]*l[=a]b), n. [OE.
astrolabie, astrilabe, OF. astrelabe, F. astrolabe, LL.
astrolabium, fr. Gr. 'astrola`bon; 'a`stron star + ?, ?, to
take.]
1. (Astron.) An instrument for observing or showing the
positions of the stars. It is now disused.
Note: Among the ancients, it was essentially the armillary
sphere. A graduated circle with sights, for taking
altitudes at sea, was called an astrolabe in the 18th
century. It is now superseded by the quadrant and
sextant.
2. A stereographic projection of the sphere on the plane of a
great circle, as the equator, or a meridian; a
planisphere. --Whewell.
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