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English definition of “logarithm”

logarithm

noun [C] uk   /ˈlɒɡ.ə.rɪ.ðəm/ us    /ˈlɑː.ɡə-/ (informal log)
the number that shows how many times a number, called the base, has to be multiplied by itself to produce another number. Adding or taking away logarithms can replace multiplying or dividing large numbers.
logarithmic
adjective uk   /ˌlɒɡ.ərˈɪð.mɪk/ us    /ˌlɑː.ɡəˈrɪð-/
logarithmically
adverb uk   /ˌlɒɡ.ərˈɪð.mɪ.kəl.i/ us    /ˌlɑː.ɡəˈrɪð-/
(Definition of logarithm from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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