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

  • adv. To infinity; having no end.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adv. Endlessly; for ever; neverendingly.

from the GNU version of the Collaborative International Dictionary of English

  • Without limit; endlessly.

from The Century Dictionary and Cyclopedia

  • To infinity; endlessly; on and on without end; through an infinite series.

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

  • adv. to infinity; without or seemingly without limit


Latin ad, to + īnfīnītum, accusative of īnfīnītus, infinite.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin ad infinitum ("to infinity"). (Wiktionary)


  • “Stop!” said Mr. Towkington, “issue of the child or children of the deceased certainly meant ‘issue ad infinitum — but — issue of any person not a child of the deceased only meant the child of that person and did not include other descendants.

    Unnatural Death


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