Eratosthenes meaning

ĕrə-tŏsthə-nēz
Greek mathematician, astronomer, and geographer who devised a map of the world, estimated the circumference of the earth and the distance to the moon and the sun, and constructed a method for finding prime numbers.
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Greek mathematician and astronomer who is best known for making an accurate estimate of the circumference of the Earth by measuring the angle of the Sun's rays at two different locations at the same time. He also invented a method for listing the prime numbers that are less than any given number.
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(person) 275?-195? b.c.; Gr. geographer, astronomer, & mathematician.
proper name
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