antilogarithm

[an-ti-law-guh-rith-uhm, -rith-, -log-uh-]

noun

Mathematics.

1. the number of which a given number is the logarithm; antilog

antilogarithm

/ ˌæntɪˈlɒɡəˌrɪðəm /

noun

1. Often shortened to: antilog. a number whose logarithm to a given base is a given number

   100 is the antilogarithm of 2 to base 10

antilogarithm

1. The number whose logarithm is a given number. For example, the logarithm of 1,000 (10 ³) is 3, so the antilogarithm of 3 is 1,000. In algebraic notation, if log x = y, then antilog y = x.

Other Word Forms

• antilogarithmic adjective

Word History and Origins

Origin of antilogarithm¹

First recorded in 1790–1800; anti- + logarithm

Example Sentences

The series is formed by successive multiplication, and any antilogarithm to a larger number of decimal places is formed from it in the same way by multiplication.

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For a further explanation of logarithms, and for an explanation of the treatment of cases in which an antilogarithm is less than 1, see Logarithm.

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