A third thing that is indefinite and undefined but is related to two definite or known things.
- Unfortunately, given the interminability of the debate, only a few voices in the book seek to find a tertium quid - that is, a wider outlook that could lift the debate off its current hinges and onto a more illuminative level.
- Unable to fully reconcile the cases, Justice Scalia said that the trade dress in Two Pesos was either some form of packaging, or tertium quid.
Early 18th century: from late Latin, translation of Greek triton ti 'some third thing'.
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Syllabification: ter·ti·um quid
Definition of tertium quid in:
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