ASTROLABE

astrolabe

(noun) an early form of sextant

Source: WordNet® 3.1

Etymology

Noun

astrolabe (plural astrolabes)

An astronomical and navigational instrument for gauging the altitude of the Sun and stars.

Anagrams

• roastable

Source: Wiktionary

As"tro*labe, n. Etym: [OE. astrolabie, astrilabe, OF. astrelabe, F. astrolabe, LL. astrolabium, fr. Gr.

1. (Astron.)

Definition: 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 It is now superseded by the quadrant and sextant.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.

Source: Webster’s Unabridged Dictionary 1913 Edition

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