Advertisement - Continue reading below

Definition of "octillion" [oc•til•lion]

  • The cardinal number equal to 1027. (noun)
  • Chiefly British The cardinal number equal to 1048. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "octillion" in a sentence
  • "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."
  • "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)."
  • "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."