log·​a·​rithm | \ ˈlȯ-gə-ˌri-t͟həm How to pronounce logarithm (audio) , ˈlä- \

Definition of logarithm

: the exponent that indicates the power to which a base number is raised to produce a given number the logarithm of 100 to the base 10 is 2

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Other Words from logarithm

logarithmic \ ˌlȯ-​gə-​ˈrit͟h-​mik How to pronounce logarithm (audio) , ˌlä-​ \ adjective
logarithmically \ ˌlȯ-​gə-​ˈrit͟h-​mi-​k(ə-​)lē How to pronounce logarithm (audio) , ˌlä-​ \ adverb

Examples of logarithm in a Sentence

Recent Examples on the Web Though Dvorkin attributes secrecy behind the FICO logarithm to the spreading of myths about precise math behind creating the credit risk score commonly used by lenders, FICO does offer up some of the details. Rich Exner, cleveland, 29 Apr. 2021 Finding the power of 10 that a number is raised to is exactly what a logarithm does. Rhett Allain, Wired, 27 Nov. 2020 In a simple statistical model, Manrubia and her colleagues showed that the average number of generations separating two random present-day individuals from a common genealogical ancestor depends on the logarithm of the relevant population’s size. Scott Hershberger, Scientific American, 5 Oct. 2020 The new algorithm checks planarity in a number of steps proportional to the cube of the logarithm of the number of nodes in the graph — an exponential improvement. Quanta Magazine, 15 Sep. 2020 Estimates that are widely accepted in the field of cryptography predict that the larger size logarithm should be about 2.25 times harder to compute. Dan Goodin, Ars Technica, 3 Dec. 2019 The logarithm function is well-known in the non-linear scales for energy released during earthquakes (Richter) or for measuring sound (decibels). Christian Yates, Quartz, 4 Dec. 2019 The same team of researchers also computed a discrete logarithm of the same size. Dan Goodin, Ars Technica, 3 Dec. 2019 Other encryption algorithms base their security on the difficulty of solving certain discrete logarithm problems. Dan Goodin, Ars Technica, 3 Dec. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'logarithm.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of logarithm

circa 1616, in the meaning defined above

History and Etymology for logarithm

New Latin logarithmus, from log- + Greek arithmos number — more at arithmetic

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Time Traveler for logarithm

Time Traveler

The first known use of logarithm was circa 1616

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Statistics for logarithm

Last Updated

7 May 2021

Cite this Entry

“Logarithm.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/logarithm. Accessed 22 Jun. 2021.

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More Definitions for logarithm



English Language Learners Definition of logarithm

mathematics : a number that shows how many times a base number (such as ten) is multiplied by itself to produce a third number (such as 100)

More from Merriam-Webster on logarithm

Nglish: Translation of logarithm for Spanish Speakers

Britannica.com: Encyclopedia article about logarithm


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