hipparchus
English Thesaurus
1. 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) (noun.person)
| instance hypernym | : | astronomer, stargazer, uranologist, |
| definition | : | a physicist who studies astronomy (noun.person) |
| instance hypernym | : | mathematician, |
| definition | : | a person skilled in mathematics (noun.person) |
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