Adjective thousandth has 1 sense
  1. thousandth, 1000th - the ordinal number of one thousand in counting order
    Antonym: cardinal (indirect, via ordinal)
,Noun thousandth has 2 senses
  1. thousandth - position 1,000 in a countable series of things
    --1 is a kind of
    rank
  2. one-thousandth, thousandth - one part in a thousand
    --2 is a kind of common fraction, simple fraction
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