Napier's rods
Napier's bones Na"pi*er's bones`, Napier's rods Na"pi*er'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. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Napier's rods — noun a set of graduated rods formerly used to do multiplication and division by a method invented by John Napier • Syn: ↑Napier s bones • Usage Domain: ↑plural, ↑plural form • Hypernyms: ↑calculator, ↑calculating machine …   Useful english dictionary

  • Napier's rods — noun Another name for Napier’s bones …   Wiktionary

  • Napier's bones — Na pi*er s bones , Napier s rods Na pi*er 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… …   The Collaborative International Dictionary of English

  • Napier's bones — Computing devices in Rabdology Napier s bones Promptuary …   Wikipedia

  • Napier's bones — noun a set of graduated rods formerly used to do multiplication and division by a method invented by John Napier • Syn: ↑Napier s rods • Usage Domain: ↑plural, ↑plural form • Hypernyms: ↑calculator, ↑calculating machine …   Useful english dictionary

  • Napier's bones — Math. a form of multiplication table originally marked on sticks of bone or ivory that could be rearranged to carry out the operations of multiplication or division. Also called Napier s rods. [1650 60; after their developer, J. NAPIER] * * * …   Universalium

  • Napier's bones — noun Date: circa 1658 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 …   New Collegiate Dictionary

  • Napier's bones — noun A set of numbered rods used for multiplication and division (see the Wikipedia article for a fuller explanation) …   Wiktionary

  • Na|pier's rods — Na|pier s bones or Na|pier s rods «NAY pee uhrz», a device for multiplying and dividing, consisting of narrow pieces of wood or other material which are separated into compartments marked with certain digits. It was invented by the Scottish… …   Useful english dictionary

  • Napier Deltic — engine at the National Railway Museum, York, UK The Napier Deltic engine is a British opposed piston valveless, two stroke diesel engine used in marine and locomotive applications, designed and produced by Napier Son. The cylinders were divided… …   Wikipedia

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