| Definition of 'napier's rods' |
Princeton's WordNet |
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1. (noun) Napier's bones, Napier's rods
a set of graduated rods formerly used to do multiplication and division by a method invented by John Napier
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| Definition of 'napier's rods' |
Webster Dictionary |
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1. napier's rods
a set of rods, made of bone or other material, each divided into nine spaces, and containing the numbers of a column of the multiplication table; -- a contrivance of Baron Napier, the inventor of logarithms, for facilitating the operations of multiplication and division
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Definitions of napier's rods 
