Definitions

1. noun

A unit of angular measurement equal to 1/14 560 000 of a revolution.

“The engineer used a theodolite to measure the angle of elevation to Napier’s arc.”

2. noun

A type of logarithmic scale developed by John Napier.

“The mathematician used the Napier’s bones to calculate the logarithm of a large number.”

3. proper noun

A Scottish surname and the name of a Scottish mathematician and theologian (1550-1617) who invented logarithms and the Napier’s bones.

“The Scottish historian wrote a biography about the life of John Napier.”

4. verb

to calculate or determine a position by using a theodolite or other surveying instrument, especially to find the position of a celestial body.

“The astronomer napped the position of the planet using a theodolite and a set of celestial tables.”