n. 反对数

[经] 真数, 反(逆)对数

[ noun ]
the number of which a given number is the logarithm
<noun.communication>

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.