• For a number x, the power to which a given base number must be raised in order to obtain x. Written \log_b x. For example, \log_{10} 1000 = 3 because 10^3 = 1000 and \log_2 16 = 4 because 2^4 = 16.


Similar words


  • From New Latin logarithmus, term coined by Scot mathematician John Napier from Ancient Greek λόγος ("word, reason") and ἀριθμός; compare rational number, from analogous Latin.

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