one-third

• one third

one-third (uncountable)

1. One of three equals parts (1/3, ⅓, 0.333…).
   • 1981, William Irwin Thompson, The Time Falling Bodies Take to Light: Mythology, Sexuality and the Origins of Culture, London: Rider/Hutchinson & Co., page 186:

     Gilgamesh is himself a man, two-thirds god, one-third mortal.

   • 2021 December 29, Stephen Roberts, “Stories and facts behind railway plaques: Chester (1848)”, in Rail, number 947, page 57:

     There are some glittering stats out there regarding Brassey: namely that he'd built around one-third of Britain's railways by the time he was in his early 40s, and that by the time of his death (aged 65) he was responsible for around one-twentieth of the world's railways.

• Thesaurus:fraction
• Appendix:English numerals

• “one-third”, in OneLook Dictionary Search.
• "one-third" in WordNet 3.1, Princeton University, 2011.