thousandth thousandfoldly • thousandweight · · · Info · Definitions · Synonyms · Characters · · thousandth · · Text Latin · · Script 10 · · Length Definitions · · · (noun) position 1,000 in a countable series of things. · · Noun Definition 1 (noun) one part in a thousand equal parts. Synonyms: one-thousandth. · · Noun Definition 2 (adj) the ordinal number of one thousand in counting order. Synonyms: 1000th. · · Adjective Definition 1 Synonyms · · · one-thousandth · · Synonym 1 1000th · · Synonym 2 Characters · · a latin small letter a U+0061 d latin small letter d U+0064 h latin small letter h U+0068 n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075