Astrolabe (noun)

An instrument used in ancient and medieval astronomy to determine the positions of the stars and to solve problems relating to time and the calendar.

Origin:

Late middle english: via latin from greek astrolabos, from astrolabos "star-taker", from astron "star" + lambanein "to take".

Examples:

1. The astrolabe was widely used by navigators in the Middle Ages to determine their location at sea.
2. The astrolabe was a complex and sophisticated instrument, requiring extensive knowledge of mathematics and astronomy to use effectively.
3. The astrolabe was an important tool for astronomers and astrologers in the ancient world.
4. The invention of the astrolabe marked a significant milestone in the history of astronomy and navigation.
5. The astrolabe was made of brass and was decorated with intricate designs and inscriptions.