Definitions

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

  • n. The cardinal number equal to 1027.
  • n. Chiefly British The cardinal number equal to 1048.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A thousand trillion trillion, a billion billion billion: 1 followed by 27 zeros, 1027.
  • n. A quadrillion quintillion: 1 followed by 48 zeros, 1048.

from the GNU version of the Collaborative International Dictionary of English

  • n. According to the French method of numeration (which method is followed also in the United States) the number expressed by a unit with twenty-seven ciphers annexed. According to the English method, the number expressed by a unit with forty-eight ciphers annexed. See numeration.

from The Century Dictionary and Cyclopedia

  • n. In Great Britain, the number produced by involving a million to the eighth power.
  • n. In French and United States usage, one thousand raised to the ninth power.

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

  • n. the number that is represented as a one followed by 27 zeros

Etymologies

oct(o)- + (m)illion.
(American Heritage® Dictionary of the English Language, Fourth Edition)
oct- (“eight”) + -illion (Wiktionary)

Examples

  • Moreover, Mr. Stuart suggests that the Maya computed dates nearly 72 octillion years into the future—that's 72 followed by 27 zeros—by which time, modern scientists tell us, the universe will have ended for real.

    Cosmic Conspiracy Theories

  • I didn†™ t say it was getting smaller phyisically (as you can still arrange a few quadrillion atoms in the same foot print as a few octillion atoms).

    Think Progress » ThinkFast AM: July 10, 2006

  • No word on where the gold or silver needed to back a third of an octillion dollars would come from, or where it would beput.

    The Volokh Conspiracy » 2007 » September

  • CREW has released its third of octillion installment of the most corrupt members of Congress.

    Why Our Government Is Broken

  • Statistically, if you test fifteen spots on the DNA strand, there are more than an octillion nuclear DNA profiles, which is awfully nice when you're in front of a jury and trying to pin down a particular individual.

    The Tenth Circle

  • It goes to an octillion years, 41 octillion years.

    NPR Topics: News

  • But in 1946, it cost 460 octillion pengos to get one dollar in return.

    The Moderate Voice

  • More importantly, I am a huge geek (bordering on dork) when it comes to numbers, and when I was a kid I would sit and memorize the names of the big exponents: decillion, nonillion, octillion (my favorite; I like the way it sounds).

    Bad Astronomy

  • But I think there are positions still is that we think that given the physical properties of octillion pipe in the larger diameter, that pipe is that that will stay.

    SeekingAlpha.com: Home Page

  • So, I think there's more of an engineering reason to stick with octillion pipe.

    SeekingAlpha.com: Home Page

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