exponential

adjective

ex·​po·​nen·​tial ˌek-spə-ˈnen(t)-shəl 

1

: of or relating to an exponent

2

: involving a variable in an exponent

10^x 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

exponentially

ˌek-spə-ˈnen(t)-sh(ə-)lē 

adverb

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

There are moments when the book, in defending Giacometti, seems to overburden his oeuvre with an exponential set of aesthetic, intellectual, and political problems, from resolving the tensions between modernism and the avant-garde to a singular working through of national trauma. —Ara H. Merjian, ARTnews.com, 16 Apr. 2026

Starting with three Starbucks stores in Buffalo in the fall of 2021, Scheiber watched union elections spread at that company with exponential force. —Nick Lichtenberg, Fortune, 10 Apr. 2026

The rapid, relentless, exponential expansion of the Universe took whatever entropy might have pre-existed within a specific region of space — occupying a certain volume of space — and inflated that volume to tremendous quantities. —Big Think, 9 Apr. 2026

Warmer air holds more water, and the relationship is exponential, so small increases in temperature can yield huge jumps in rainfall intensity. —Eric Klinenberg, New Yorker, 6 Apr. 2026

Word History

First Known Use

1701, in the meaning defined at sense 1

Phrases Containing exponential

• exponential function

Rhymes for exponential

• consequential
• deferential
• evidential
• existential
• influential
• nonessential
• penitential
• precedential
• preferential
• presidential
• providential
• referential

Kids Definition

exponential

adjective

ex·​po·​nen·​tial ˌek-spə-ˈnen-chəl 

: of, relating to, or involving an exponent

xⁿ is an exponential expression

exponentially

-ˈnench-(ə-)lē 

adverb

Medical Definition

exponential

adjective

ex·​po·​nen·​tial ˌek-spə-ˈnen-chəl 

: expressible or approximately expressible by an exponential function

an exponential growth rate

exponentially

-ˈnench-(ə-)lē 

adverb