quintillionth

Definitions of quintillionth
  1. adjective
    the ordinal number of one quintillion in counting order
    synonyms:
    ordinal
    being or denoting a numerical order in a series
  2. noun
    one part in a quintillion equal parts
    synonyms: one-quintillionth
    see moresee less
    type of:
    common fraction, simple fraction
    the quotient of two integers
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