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Noun: one-billionth
  1. One part in a billion equal parts
    - billionth

Derived forms: one-billionths

Type of: common fraction, simple fraction, vulgar fraction [Brit]

Nearest

One Thousand and One Nights
one thousand million
one thousand thousand
one time
one up
one-act play
one-acter
one-and-one
one-armed
one-armed bandit
one-billionth
one-celled
one-dimensional
one-dimensional language
one-dimensionality
one-eared
one-eighth
one-eyed
one-fifth
one-flowered pyrola
one-flowered wintergreen