1
: of or relating to an exponent
2
: involving a variable in an exponent
10x is an exponential expression
3
: expressible or approximately expressible by an exponential function
especially : characterized by or being an extremely rapid increase (as in size or extent)
an exponential growth rate

Examples of exponential in a Sentence

The business has experienced several years of exponential growth. Prices have increased at an exponential rate. 103 is an exponential expression.
Recent Examples on the Web
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Reaching exponential growth requires treating client acquisition like an engine. Angelica Kopec, Forbes.com, 31 July 2026 The company posted exponential growth in both earnings and revenue, but the figures failed to justify Wall Street’s lofty expectations for one of the biggest winners of the AI boom. Yun Li, CNBC, 29 July 2026 Human error was involved, but Flock cameras working off the company’s AI tech compounded everything at an exponential rate. Joel Feder, The Drive, 29 July 2026 The researchers discovered that seaweeds accumulate critical minerals from the surrounding seawater into their tissues, sometimes in exponential concentrations. New Atlas, 27 July 2026 See All Example Sentences for exponential

Word History

First Known Use

1701, in the meaning defined at sense 1

Time Traveler
The first known use of exponential was in 1701

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Cite this Entry

“Exponential.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/exponential. Accessed 6 Aug. 2026.

Kids Definition

exponential

adjective
: of, relating to, or involving an exponent
xⁿ is an exponential expression

Medical Definition

exponential

adjective
: expressible or approximately expressible by an exponential function
an exponential growth rate

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