hipparchus
Proper noun A specific historical figure from ancient Greece. Hipparchus was an astronomer and mathematician who lived in the 2nd century BC. He is renowned for several foundational discoveries in science, including the precession of the equinoxes, creating the first comprehensive star catalog, and pioneering work in trigonometry.
The word "Hipparchus" is used exclusively as a proper noun to refer to this individual. It is typically used in historical, astronomical, and mathematical contexts. * In discussions of the history of astronomy, Hipparchus is often cited for his accurate celestial measurements. * The lunar crater Hipparchus is named in his honor. * Scholars study the methods of Hipparchus to understand ancient Greek science.
- Attributive Use: The name can be used attributively to describe his work or era (e.g., , ).
- Historical Context: The name is frequently mentioned alongside other great ancient scientists like Ptolemy, who built upon his work.
- Hipparchian (adjective): Pertaining to Hipparchus or his work.
- The Hipparchian model was a significant advance in predicting planetary motion.
- The Greek astronomer
- The father of trigonometry (an honorary title sometimes used in historical context)
This word has only one specific referent: the historical person Hipparchus of Nicaea. It does not have multiple meanings or common metaphorical uses.
- Greek astronomer and mathematician who discovered the precession of the equinoxes and made the first known star chart and is said to have invented trigonometry (second century BC)