infinity
noun
in·fin·i·ty in-ˈfi-nə-tē 
plural infinities
1
a
: the quality of being infinite
b
: unlimited extent of time, space, or quantity : boundlessness
The view tapers off into infinity.
2
: an indefinitely great number or amount
an infinity of stars
3
a
: 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 82-foot infinity saltwater pool on the ninth floor serves bright, refreshing bites and resort-y drinks in a setting that’s extra atmospheric thanks to Bangkok’s third-tallest tree, a sampong, which emerges from an elliptical opening to shade the breezy lagoon with its shimmery canopy. —
Condé Nast, Condé Nast Traveler, 23 Apr. 2026 All three structures retain their original footprints, while modern amenities include a 45-foot infinity-edge pool, a state-of-the-art outdoor kitchen, an open-air cabana and a quarter-size basketball court. —Sandra Barrera, Oc Register, 22 Apr. 2026 Susurros del Corazón is highlighted by three infinity-edge pools that cascade down to the beach; Morritos Kids Club; and four dining options including La Boquita, an open-air taqueria with ceviches and agave-forward cocktails. —Carole Dixon, HollywoodReporter, 21 Apr. 2026 Or set the dial to infinity point (∞) on your lens' dial and take an image, nudging past it for each successive image until the stars are sharp. —Jamie Carter, Space.com, 14 Apr. 2026 See All Example Sentences for infinity
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Condé Nast, Condé Nast Traveler, 23 Apr. 2026 All three structures retain their original footprints, while modern amenities include a 45-foot infinity-edge pool, a state-of-the-art outdoor kitchen, an open-air cabana and a quarter-size basketball court. —Sandra Barrera, Oc Register, 22 Apr. 2026 Susurros del Corazón is highlighted by three infinity-edge pools that cascade down to the beach; Morritos Kids Club; and four dining options including La Boquita, an open-air taqueria with ceviches and agave-forward cocktails. —Carole Dixon, HollywoodReporter, 21 Apr. 2026 Or set the dial to infinity point (∞) on your lens' dial and take an image, nudging past it for each successive image until the stars are sharp. —Jamie Carter, Space.com, 14 Apr. 2026 See All Example Sentences for infinity
Cite this Entry
“Infinity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.grautoblog.com/dictionary/infinity. Accessed 28 Apr. 2026.
Copy CitationKids Definition
infinity
noun
in·fin·i·ty in-ˈfin-ət-ē
plural infinities
1
a
: the quality of being infinite
b
: a space, quantity, or period of time that is without limit
2
: an indefinitely great number or amount
3
: a point infinitely far away
Etymology
Middle English infinite "the quality of having no limit," from early French infinité (same meaning), derived from Latin infinitus (adjective) "having no limit," from in- "not" and finitus, past participle of finire "to limit, bring to an end," from finis "end, limit" — related to define, final, finish
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