the number that results when a base is raised to a power by a logarithm: 10 = 1,000 is expressed by: the antilogarithm of 3 to the base 10 is 1,000, or antilog 3 = 1,000, or log 1,000 = 3
See antilogarithm in American Heritage Dictionary 4
noun
The number for which a given logarithm stands; for example, where log x equals y, then x is the antilogarithm of y.