/law"geuh ridh'euhm, -rith'-, log"euh-/ , n. Math.
the exponent of the power to which a base number must be raised to equal a given number; log: 2 is the logarithm of 100 to the base 10 (2 = log 10 100).
[ 1605-15; logarithmus lóg ( os ) LOG- + arithmós number; see ARITHMETIC ]