# Eratosthenes

276?–195? b.c., Greek mathematician and astronomer at Alexandria.

## Words Nearby Eratosthenes

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## How to use Eratosthenes in a sentence

There is no ground for considering the Geography of Strabo an improved edition of that of

*Eratosthenes*.In conclusion, he again corrects

*Eratosthenes*as regards the magnitude and divisions of the inhabited world.The next scheme of musical ratios is that of

*Eratosthenes*, who makes no use of the natural Major Third.The Modes of Ancient Greek Music | David Binning MonroThe places in a straight line with these, as far as India, are described in the same manner by Artemidorus and

*Eratosthenes*.*Eratosthenes*relates the same facts, for he speaks of a winter and a summer sowing, and of the rain at the same seasons.

## British Dictionary definitions for Eratosthenes

/ (ˌɛrəˈtɒsθɪˌniːz) /

?276–?194 bc, Greek mathematician and astronomer, who calculated the circumference of the earth by observing the angle of the sun's rays at different places

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

## Scientific definitions for Eratosthenes

[ ĕr′ə-tŏs′thə-nēz′ ]

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.

## biography For Eratosthenes

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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