in·​fin·​i·​ty | \ in-ˈfi-nə-tē How to pronounce infinity (audio) \
plural infinities

Definition of infinity

1a : the quality of being infinite
b : unlimited extent of time, space, or quantity : boundlessness
2 : an indefinitely great number or amount an infinity of stars
3a : the limit of the value of a function or variable when it tends to become numerically larger than any preassigned finite number
b : a part of a geometric magnitude that lies beyond any part whose distance from a given reference position is finite do parallel lines ever meet if they extend to infinity
c : a transfinite number (such as aleph-null)
4 : a distance so great that the rays of light from a point source at that distance may be regarded as parallel

Examples of infinity in a Sentence

The view tapers off into infinity. a series of numbers that continues to infinity The night sky was filled with an infinity of stars.
Recent Examples on the Web The most obvious comparison with Joy is Vaughan herself — the rich lower register, the baroque melodic ornamentation, swoops up and down octaves from word to word, multi-note melisma stretching one-syllable words to infinity. Jon Garelick,, 17 Sep. 2022 Amenities include infinity-edge pools, a state-of-the-art theater and a fur coat storage facility to protect garments from Miami's humidity. CBS News, 1 Sep. 2022 With indoor and outdoor living areas, the villa includes a heated infinity-edge pool, an open-air shower, an indoor garden, an outside kitchen and a chef. Emily Longeretta, Variety, 20 Aug. 2022 An infinity-edge pool is also equipped with fire features. Libertina Brandt, WSJ, 18 Aug. 2022 The home is anchored on its lower level by a massive infinity-edge pool that is elegantly split in half by a bijoux bridge with one side literally lagoon-like. Dckaufman, Robb Report, 10 Aug. 2022 The resort also has an infinity-edge pool overlooking the water that is more than twice the size of the average Olympic-sized pool. Ramsey Qubein, Forbes, 10 July 2022 An infinity-edge pool is perched at the edge of the property, taking in views of the canyons below. Jack Flemming, Los Angeles Times, 7 July 2022 Top Gun: Maverick continued to soar to infinity and beyond. Scott Mendelson, Forbes, 2 July 2022 See More

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

First Known Use of infinity

14th century, in the meaning defined at sense 1a

History and Etymology for infinity

Middle English infinite, borrowed from Anglo-French infinité, borrowed from Latin infīnitāt-, infīnitās, from in- in- entry 1 + fīnis "boundary, limit, terminal point, ending" + -itāt-, -itās -ity — more at final entry 1

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Time Traveler for infinity

Time Traveler

The first known use of infinity was in the 14th century

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Dictionary Entries Near infinity



infinity pool

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Statistics for infinity

Last Updated

25 Sep 2022

Cite this Entry

“Infinity.” Dictionary, Merriam-Webster, Accessed 6 Oct. 2022.

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More Definitions for infinity


in·​fin·​i·​ty | \ in-ˈfi-nə-tē How to pronounce infinity (audio) \
plural infinities

Kids Definition of infinity

1 : the quality of being without limits the infinity of space
2 : a space, quantity, or period of time that is without limit

More from Merriam-Webster on infinity

Nglish: Translation of infinity for Spanish Speakers

Britannica English: Translation of infinity for Arabic Speakers Encyclopedia article about infinity


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