eratosthenes

English Thesaurus

1. Greek mathematician and astronomer who estimated the circumference of the earth and the distances to the Moon and sun (276-194 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)