antilogarithm

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. The number for which a given logarithm stands; for example, where log x equals y, then x is the antilogarithm of y.

Century Dictionary and Cyclopedia

1. n. In mathematics: The complement of the logarithm of any sine, tangent, or secant up to that of 90 degrees.
2. n. As commonly used, the number corresponding to any logarithm. Thus, according to the common system, 100 is the antilogarithm of 2, because 2 is the logarithm of 100; it is denoted thus: log. 2, log. a, which may be read: “The number to the log. 2,” “the number to the log. a.”

Wiktionary

1. n. mathematics The number of which a given number is the logarithm (to a given base).

GNU Webster's 1913

1. n. (Math.) The number corresponding to a logarithm. The word has been sometimes, though rarely, used to denote the complement of a given logarithm; also the logarithmic cosine corresponding to a given logarithmic sine.

WordNet 3.0

1. n. the number of which a given number is the logarithm