billionth

(bilyənt̸h)

adjective

  1. coming last in a series of a billion
  2. designating any of the billion equal parts of something

noun

  1. the last in a series of a billion
  2. any of the billion equal parts of something

See billionth in American Heritage Dictionary 4

noun
  1. The ordinal number matching the number one billion in a series.
  2. One of a billion equal parts.

Related Forms:

  • bilˈlionth adjective & adv.

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