|
|
 |
|
|
|
|
| as·tro·labe [ ástrə làyb ] (plural as·tro·labes) |
noun |
|
| Definition: |
| |
early astronomical instrument: an early instrument used to observe the position and determine the altitude of the Sun or other astronomical object. The astrolabe was used for navigation from the Middle Ages until the 18th century when it was replaced by the sextant.
|
| [14th century. Via Old French and medieval Latin< Greek astrolabon, literally "take a star"] |
|
|
|
