subjectum
Subjectum is a Latin noun used in philosophy, logic, and the history of thought to denote the subject of a proposition or inquiry. The term derives from the Latin neuter noun subjectum, related to subjectus, historically used to mean “that which is subjected” or “the bearer of predication.” In scholastic and medieval philosophy, subjectum refers to the term that bears the predicate in a categorical proposition; for example, in “All humans are mortal,” “humans” is the subject, while “mortal” is the predicatum. The subject is contrasted with the predicatum (the predicate) and with the term representing the copula linking them. In logic, the subject term is the grammatical and logical bearer of a property.
In broader philosophy and epistemology, subjectum often denotes the subject in the sense of the thinker or
Today, subjectum survives primarily in historical or scholarly discussions of Latin translations of Aristotelian and Scholastic