Antilogarithm \An`ti*log"a*rithm\, 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. -- {An`ti*log`a*rith"mic}, a.
[1913 Webster]