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tertium quid

[ tur-shee-uhm kwid; Latin ter-ti-oom kwid ]
/ ˈtɜr ʃi əm ˈkwɪd; Latin ˈtɛr tɪˌʊm ˈkwɪd /
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noun
something related in some way to two things, but distinct from both; something intermediate between two things.
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Origin of tertium quid

1715–25; <Latin, translation of Greek tríton·ti some third thing
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use tertium quid in a sentence

British Dictionary definitions for tertium quid

tertium quid
/ (ˈtɜːtɪəm ˈkwɪd) /

noun
an unknown or indefinite thing related in some way to two known or definite things, but distinct from boththere is either right or wrong, with no tertium quid

Word Origin for tertium quid

C18: from Late Latin, rendering Greek triton ti some third thing
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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