eratosthenes Share definition Flag A really old Greek guy who invented a heap of things. Nowadays he is just one of those cement/marble head statues. Eratosthenes wrote music, poetry, mathematical formulas and a heap of other smart things. eratosthenes by Paixx May 13, 2015 0 0 Get merch Get the eratosthenes mug. Buy Now — $32.95 See more merch