from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Having no boundaries or limits.
  • adj. Immeasurably great or large; boundless: infinite patience; a discovery of infinite importance.
  • adj. Mathematics Existing beyond or being greater than any arbitrarily large value.
  • adj. Mathematics Unlimited in spatial extent: a line of infinite length.
  • adj. Mathematics Of or relating to a set capable of being put into one-to-one correspondence with a proper subset of itself.
  • n. Something infinite.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Having infinitely many elements.
  • n. Infinitely many.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Unlimited or boundless, in time or space.
  • adj. Without limit in power, capacity, knowledge, or excellence; boundless; immeasurably or inconceivably great; perfect; ; -- opposed to finite.
  • adj. Indefinitely large or extensive; great; vast; immense; gigantic; prodigious.
  • adj. Greater than any assignable quantity of the same kind; -- said of certain quantities.
  • adj. Capable of endless repetition; -- said of certain forms of the canon, called also perpetual fugues, so constructed that their ends lead to their beginnings, and the performance may be incessantly repeated.
  • n. That which is infinite; boundless space or duration; infinity; boundlessness.
  • n. An infinite quantity or magnitude.
  • n. An infinity; an incalculable or very great number.
  • n. The Infinite Being; God; the Almighty.

from The Century Dictionary and Cyclopedia

  • Immeasurably or innumerably great; so great as to be absolutely incapable of being measured or counted.
  • All-embracing; lacking nothing; the greatest possible; perfect; absolute: applied only to Divinity.
  • Boundless; unbounded; endless; without limit; interminable. In this sense the surface of a pea is infinite, while a plane of immeasurable extent whose continuity is interrupted by one small hole is finite.
  • By hyperbole, indefinitely extensive; beyond our powers of measuring or reckoning.
  • [Tr. Gr. ἀόριστος: see aorist.] In logic, modified, as a term, by a sign of negation.
  • n. Anything which is infinite, in any sense.
  • n. A large number; a crowd.
  • n. In geometry, the plane on which lie all points at infinity and all straights at infinity.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. total and all-embracing
  • adj. too numerous to be counted
  • adj. having no limits or boundaries in time or space or extent or magnitude
  • n. the unlimited expanse in which everything is located
  • adj. of verbs; having neither person nor number nor mood (as a participle or gerund or infinitive)


Middle English infinit, from Old French, from Latin īnfīnītus : in-, not; see in-1 + fīnītus, finite, from past participle of fīnīre, to limit; see finite.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin infinitus, from in- ("not") + finis ("end") + the perfect passive participle ending -itus. (Wiktionary)



Log in or sign up to get involved in the conversation. It's quick and easy.

  • "3. Boundless; unbounded; endless; without limit; interminable. In this sense the surface of a pea is infinite, while a plane of immeasurable extent whose continuity is interrupted by one small hole is finite."
    --Cent. Dict. (it makes more sense after you've read the first definition)

    August 16, 2011

    That's right. Here -- sit right down here.
    That's it. Ha ha! This -- this is the same
    genuine, magic, authentic crystal used by
    the Priests of Isis and Osiris in the days
    of the Pharaohs of Egypt -- in which
    Cleopatra first saw the approach of Julius
    Caesar and Marc Anthony, and -- and so on
    -- and so on. Now, you -- you'd better
    close your eyes, my child, for a moment --
    in order to be better in tune with the
    infinite. We -- we can't do these things
    ...reaching out into the....
    ...infinite. Yes.

    June 11, 2010

  • "Alas, poor Yorick! I knew him, Horatio: a fellow of infinite jest, of most excellent fancy" Hamlet, IV.i

    January 6, 2008

  • Impossible!

    September 17, 2007

  • Indeed an infinite number of infants indicates idiosyncratic insensitivities of the infertility indices.

    September 16, 2007