trillion Hear it!

trillion definition

tril·lion (tril′yen)

noun

  1. ☆ the number represented by 1 followed by 12 zeros
  2. Brit. the number represented by 1 followed by 18 zeros
  3. an indefinite but very large number: a hyperbolic use

Etymology: Fr < tri-, tri- + (mi)llion

adjective

amounting to one trillion in number

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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