thousandth

definition: the ordinal number of one thousand in counting order
example:
speech part: adjective
synonyms:
definition: one part in a thousand equal parts
example:
speech part: noun
synonyms: one-thousandth
definition: position 1,000 in a countable series of things
example:
speech part: noun
synonyms:

thousandth is explained and pronounced

How thousandth is being used?