trillion

Adjective

• one million million in the United States

• one quintillion in Great Britain

Noun

• the number that is represented as a one followed by 12 zeros
  • in England they call a trillion a billion
    

• the number that is represented as a one followed by 18 zeros
  • in England they call a quintillion a trillion
    

• a very large indefinite number (usually hyperbole)
  • there were millions of flies
    

Related words

• Synonyms: 
  one million million , 1000000000000 , one million million million , million , billion , zillion , jillion , gazillion