antilog

9.9

The number you get when you use a logarithm as the exponent

noun
/ˈæntiˌlɔg/

Specialized

: antilogaritmo

To find the original value, you need to calculate the antilog of the logarithmic result.
taking the antilog

Examples

Subtractive color is multiplicative, but operating in density space permits the required multiplications to become additions: logarithms of multiplicands can be added and then the antilog taken to get the result.

Academic text (1992)
To do so requires multiplying the antilog of the parameter by 100.

Academic text (2017)
So we can compute the impact of an easement by taking the antilog of the product of the proportion of easement acreage and the parameter.

Academic text (2017)
After determining the logarithm, the next step is to take the antilog to revert to the original base value.
In statistics, the antilog is essential for converting logarithmic results back into their linear form.

Synonyms

antilogarithm

vsantilog

Specialized

1 9.9

A number that gives a given value when you take its logarithm

is the shorter, informal alternative used in writing and speech

Antonyms

logarithm

Specialized

5 8.4

The power you must raise a fixed number to get a given number

Surface Forms

antilog singular

antilogs plural

Morphology

antilog = log (semi-transparent) = anti + log

The word is structurally clear as anti- + log, but the mathematical sense of log and the specialized inverse-function meaning make it less accessible to an average learner.

Etymology

Antilog comes from the prefix anti- meaning 'opposite' and log from 'logarithm', a math word about 'powers'. So an antilog is the number you get when you reverse a logarithm, which is why it undoes the log.