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[in-fuh-nit] /ˈɪn fə nɪt/
immeasurably great:
an infinite capacity for forgiveness.
indefinitely or exceedingly great:
infinite sums of money.
unlimited or unmeasurable in extent of space, duration of time, etc.:
the infinite nature of outer space.
unbounded or unlimited; boundless; endless:
God's infinite mercy.
  1. not finite.
  2. (of a set) having elements that can be put into one-to-one correspondence with a subset that is not the given set.
something that is infinite.
Mathematics. an infinite quantity or magnitude.
the boundless regions of space.
the Infinite (Being) God.
Origin of infinite
1350-1400; Middle English < Latin infīnītus boundless. See in-3, finite
Related forms
infinitely, adverb
infiniteness, noun
noninfinite, adjective, noun
noninfinitely, adverb
noninfiniteness, noun
quasi-infinite, adjective
quasi-infinitely, adverb
superinfinite, adjective
superinfinitely, adverb
superinfiniteness, noun
uninfinite, adjective
uninfinitely, adverb
uninfiniteness, noun
1. enormous, immense, tremendous.
1. small, limited. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for infinite
Contemporary Examples
Historical Examples
  • The first thought is that of the infinite worth of the soul.

    A Christmas Gift N. P. Gravengaard
  • Only the fire of love for her and the serenity of infinite peace.

    "Unto Caesar" Baroness Emmuska Orczy
  • But divide a line of infinite length in the middle, and each part is infinite.

    Curiosities of Heat Lyman B. Tefft
  • Grandon is moved with infinite pity, yet words are utterly futile.

    Floyd Grandon's Honor Amanda Minnie Douglas
  • I was, of course, a person of infinite importance to my mother.

    Discipline Mary Brunton
British Dictionary definitions for infinite


  1. having no limits or boundaries in time, space, extent, or magnitude
  2. (as noun; preceded by the): the infinite
extremely or immeasurably great or numerous: infinite wealth
all-embracing, absolute, or total: God's infinite wisdom
  1. having an unlimited number of digits, factors, terms, members, etc: an infinite series
  2. (of a set) able to be put in a one-to-one correspondence with part of itself
  3. (of an integral) having infinity as one or both limits of integration Compare finite (sense 2)
Derived Forms
infinitely, adverb
infiniteness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for infinite

late 14c., "eternal, limitless," also "extremely great in number," from Old French infinit "endless, boundless," and directly from Latin infinitus "unbounded, unlimited," from in- "not, opposite of" (see in- (1)) + finitus "defining, definite," from finis "end" (see finish). The noun meaning "that which is infinite" is from 1580s.

Online Etymology Dictionary, © 2010 Douglas Harper
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infinite in Science
  1. Relating to a set that can be put into a one-to-one correspondence with some proper subset of its own members.

  2. Relating to or being a numerical quantity describing the size of such a set.

  3. Being without an upper or lower numerical bound.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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