Astrolabe – Definition & Meaning

Astrolabe is an ancient instrument used for observing the position of celestial bodies, determining time and latitude, and solving astronomical problems. It is one of the most important instruments in the history of astronomy and navigation.

Definitions

An astrolabe is a device used to measure the altitude of celestial bodies and to determine their position in the sky. It is a circular instrument with a rotating arm and a sighting device that allows the user to measure the angle between the horizon and the celestial body being observed.

Origin

The astrolabe was invented by the ancient Greeks around 200 BCE. It was later improved by the Arabs in the 8th century and became widely used in the Islamic world. The astrolabe was introduced to Europe in the 10th century and became an important tool for navigation and astronomy during the Age of Exploration.

Meaning in different dictionaries

According to the Oxford English Dictionary, an astrolabe is “an instrument used to make astronomical measurements, typically of the altitude of celestial bodies, and to solve problems in navigation and astronomy.”

Merriam-Webster defines astrolabe as “an instrument used by early astronomers to measure the altitude of stars and planets and to determine local time.”

Associations

The astrolabe is associated with ancient astronomy, navigation, and exploration. It was used by famous explorers such as Christopher Columbus and Vasco da Gama to navigate their ships across the oceans.

Synonyms

Some synonyms of astrolabe include celestial sphere, quadrant, and sextant.

Antonyms

There are no direct antonyms of astrolabe, as it is a unique instrument with no direct opposite.

The same root words

The root words of astrolabe are “astro,” meaning star, and “labium,” meaning to take or grasp. Other words with the same root words include astronomy, astrology, and laboratory.

Example Sentences

1. The astrolabe was an important tool for early astronomers and navigators.
2. Christopher Columbus used an astrolabe to navigate his ships across the Atlantic.
3. The astrolabe allowed sailors to determine their latitude and longitude while at sea.
4. The astrolabe was an important instrument in the age of exploration and helped to advance our understanding of the universe.