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Na·pi·er's bones(nā′pē-ərz, nə-pîrz′)
pl.n. (used with a sing. verb)
A set of graduated rods used to perform multiplication quickly.
[After John Napier.]
(Mathematics) a set of graduated rods formerly used for multiplication and division
[C17: based on a method invented by John Napier]
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|Noun||1.||Napier's bones - a set of graduated rods formerly used to do multiplication and division by a method invented by John Napier|