logarithm -
n. 1 one of a series of arithmetic exponents tabulated to simplify computation by making it possible to use addition and subtraction instead of multiplication and division.
2 the power to which a fixed number or base ( see
BASE(1) )
7) must be raised to produce a given
number (the
logarithm of 1000 to base 10
is 3).
common logarithm a logarithm to the base 10. natural (or Napierian) logarithm a logarithm to the base e (2.71828.....).
logarithmic adj. logarithmically adv. [mod.L logarithmus f. Gk logos reckoning, ratio + arithmos number]