predicationis

Predicationis is the Latin genitive form of predicatio (often rendered as praedicatio in some texts), referring to predication or the act of ascribing a property or relation to a subject. In Latin philosophical and scholastic works, predicationis marks discussions about how terms in a proposition relate, and it appears in formulations that mean “of predication” or the field concerning predication.

Predication, in general, is the act of ascribing a property, relation, or attribute to a subject. In logic and philosophy, it denotes the relation between a subject term and a predicate term within a proposition, as in “All humans are mortal,” where “mortal” is predicated of “humans.” In grammar, predication describes the function of the predicate in a clause—the part that asserts something about the subject, usually expressed by a verb and its complements.

Historically, predication has been central to Aristotle’s analysis of categorical propositions and the subject–predicate structure of judgments. In medieval scholastic logic, the concept was developed as a fundamental relation between terms, with Latin treatises frequently using predicationis to designate the study of how predicates attach to subjects across universals and particulars. The term thus bridges philosophical logic and linguistic description in Latin sources.

In modern linguistics and philosophy of language, predication extends to predicate–argument structure and semantic roles, examining how predicates assign properties or actions to arguments and how this structure is realized across languages. Predicationis remains primarily of historical and terminological interest, pointing to the long-standing inquiry into how language asserts what things are or do.