quintillion

/kwɪnˈtɪljən/
adjective
  1. Amounting to one quintillion in number.
    • The computer processed quintillion calculations per second.
    • A quintillion stars exist in the observable universe.
    • The national debt reached quintillion dollars in the simulation.
noun
  1. The number 1 followed by 18 zeros (1,000,000,000,000,000,000) in the American system, or 1 followed by 30 zeros in the British system.
    • A quintillion is a very large number, often used in astronomy.
    • The star is about a quintillion miles away from Earth.
    • There are more than a quintillion grains of sand on all the beaches in the world.
  2. An extremely large but indefinite number.
    • He told a quintillion jokes, but none of them were funny.
    • I've seen that movie a quintillion times.
    • There are a quintillion reasons to visit the Grand Canyon.
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