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Meaning of astrolabe

as•tro•labe

Pronunciation: (as'tru-lāb"), [key]
— n.
  1. an astronomical instrument for taking the altitude of the sun or stars and for the solution of other problems in astronomy and navigation: used by Greek astronomers from about 200 b.c. and by Arab astronomers from the Middle Ages until superseded by the sextant.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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