adj, noun ·Uncommon ·Advanced level

Definitions

Noun

1. 1
   The person or thing in the thousandth position. singular, singular-only
2. 2
   one part in a thousand equal parts wordnet
3. 3
   One of a thousand equal parts of a whole.

   "“Ah, Alan,” murmured Dorian, with a sigh, “I wish you had a thousandth part of the pity for me that I have for you.”"

4. 4
   position 1,000 in a countable series of things wordnet

Adjective

1. 1
   The ordinal numeral form of one thousand; last in order of a series of a thousand; next after the nine hundred and ninety-ninth. not-comparable

Adjective

1. 1
   the ordinal number of one thousand in counting order wordnet

Synonyms

All synonyms

1000th1000thone thousandthone-thousandth

Example

More examples

"The chance of that happening is less than a thousandth of a percent."

Etymology

From thousand + -th (suffix forming an ordinal number).

Related phrases

one thousandth

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.