logarithm(redirected from common logarithm)
Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
If a number, x, is expressed as a power of another number, y, that is, if x = yn, then n is said to be the logarithm of x to base y. Common logarithms are to the base 10; natural or Napierian logarithms are to the base e, a mathematical constant.
[G. logos, word, ratio, + arithmos, number]
Farlex Partner Medical Dictionary © Farlex 2012