one-placeadj.
/ˈwʌnpleɪs/, U.S. /ˈwənˈpleɪs/ Logic.
Of an assertion, etc.: in which only one thing is postulated or involved; chiefly in one-place predicate. Cf. monadic adj. 1b, one-argument adj.
ΘΚΠ
the mind > mental capacity > philosophy > logic > predicate or propositional logic > [adjective] > (of assertion) containing particular elements
non-empty1905
one-place1936
open1937
singulary1940
1936 Jrnl. Philos. 33 611 As long as formal logic was confined to the study of ‘one-place’ predicates and the subject-predicate form of sentences, science was largely classificatory.
1967 S. C. Kleene Math. Logic §27. 145 More essential use is made of the predicate calculus with quantification of one-place predicates in Example 19.
1997 Philos. Rev. 106 44 The second-order variables come in different sorts, taking the grammatical positions of one-place predicates, two-place predicates,..and so on.
This entry has been updated (OED Third Edition, June 2004; most recently modified version published online March 2022).
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adj.1936