septillionth

English

Etymology

From septillion +‎ -th (ordinal suffix).

Adjective

septillionth (not comparable)

  1. The ordinal form of the number septillion.

Noun

septillionth (plural septillionths)

  1. The person or thing in the septillionth position.
  2. One of a septillion equal parts of a whole.
    • 2023 October 9, Dennis Overbye, “The Science Nobel Winners Were Short and Fast”, in The New York Times‎[1], archived from the original on 12 October 2023:
      We humans are so stuck in the middle of the cosmic scales — in average height, one-hundredth of one-septillionth (10^-24) the size of the observable universe, and with typical life spans of a couple octillion attoseconds. And an attosecond is an eternity compared with the lifetime of the elusive Higgs boson, a subatomic particle that exists for one-thousandth of an attosecond before decaying.
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