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Definition of Napier's rods
1. Noun. A set of graduated rods formerly used to do multiplication and division by a method invented by John Napier.
Exact synonyms: Napier's Bones
Generic synonyms: Calculating Machine, Calculator
Language type: Plural, Plural Form
Generic synonyms: Calculating Machine, Calculator
Language type: Plural, Plural Form
Medical Definition of Napier's rods
1. 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. Source: Websters Dictionary (01 Mar 1998)