Logarithm
(n.) One of a class of auxiliary numbers, devised by John Napier, of Merchiston, Scotland (1550-1617), to abridge arithmetical calculations, by the use of addition and subtraction in place of multiplication and division.
Similar Words:
Antilogarithm Logarithm Logarithmetic Logarithmetical Logarithmetically Logarithmic Logarithmical Logarithmically Mesologarithm