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logarithmic

American  
[law-guh-rith-mik, -rith-, log-uh-] / ˌlɔ gəˈrɪð mɪk, -ˈrɪθ-, ˌlɒg ə- /
Also logarithmical

adjective

Mathematics.
  1. pertaining to a logarithm or logarithms.

  2. (of an equation) having a logarithm as one or more of its unknowns.

  3. (of a function)

    1. pertaining to the function y = log x.

    2. expressible by means of logarithms.


logarithmic British  
/ ˌlɒɡəˈrɪðmɪk /

adjective

  1. of, relating to, using, or containing logarithms of a number or variable

  2. consisting of, relating to, or using points or lines whose distances from a fixed point or line are proportional to the logarithms of numbers

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of logarithmic

First recorded in 1690–1700; logarithm + -ic

Vocabulary lists containing logarithmic

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Their investigation led them to a broad family of theories known as conformal field theories, and more specifically to logarithmic conformal field theories.

From Science Daily • Dec. 16, 2025

While this was 0.3 magnitude greater than in 2011, that’s a twofold difference under the Richter scale, which is logarithmic.

From New York Times • Jul. 28, 2023

The scale for brightness is reverse logarithmic, which means the brighter an object is, the lower its magnitude number.

From Salon • Mar. 10, 2023

The scale’s objective, base-10 logarithmic system caught on, and although it’s been superseded, people still attach his name to the scale.

From Los Angeles Times • Mar. 7, 2023

Like the Richter scale, the proposed index would be logarithmic, so what follows is a little detour to review for the innumerate those dreaded monsters from high school algebra: logarithms.

From "Innumeracy: Mathematical Illiteracy and Its Consequences" by John Allen Paulos

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