**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