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Noun: one-trillionth
  1. One part in a trillion equal parts
    - trillionth

Derived forms: one-trillionths

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

Nearest

one-tenth
one-ten-thousandth
one-third
one-thirty-second
one-thousandth
onetime
one-time
one-to-one
one-track
one-track mind
one-trillionth
one-twelfth
one-two
one-upmanship
one-way
one-way light time
one-way street
one-winged
one-woman
one-year
one-year-old