infinity.
Endlessness, unlimitedness, absence of a beginning, end or limits to size.
Meaning & usage
Endlessness, unlimitedness, absence of a beginning, end or limits to size.
concept of infinity
The desert stretched out toward the horizon as if into infinity.
A number that has an infinite numerical value that cannot be counted.
An idealised point which is said to be approached by sequences of values whose magnitudes increase without bound.
A number which is very large compared to some characteristic number. For example, in optics, an object which is much further away than the focal length of a lens is said to be "at infinity", as the distance of the image from the lens varies very little as the distance increases further.
The symbol ∞.
Where this word comes from
From Middle English infinite, from Old French infinité, from Latin īnfīnitās (“unlimitedness”), from negative prefix in- (“not”), + fīnis (“end”), + noun of state suffix -tās. By surface analysis, infinite + -ity.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.