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Adjective: fiftieth  fif-tee-uth
  1. The ordinal number of fifty in counting order
    - 50th
Noun: fiftieth  fif-tee-uth
  1. Position 50 in a countable series of things
    "The company celebrated its fiftieth year in business"

Derived forms: fiftieths

See also: ordinal

Type of: rank