Napier's bones


Na·​pi·​er's bones ˈnā-pē-ərz- How to pronounce Napier's bones (audio)
: a set of graduated rods (as of wood or bone) invented by John Napier and used for multiplication and division based on the principles of logarithms

Word History

First Known Use

1646, in the meaning defined above

Time Traveler
The first known use of Napier's bones was in 1646

Dictionary Entries Near Napier's bones

Cite this Entry

“Napier's bones.” Dictionary, Merriam-Webster, Accessed 7 Jun. 2023.

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