A body of theory or practice relating to or prescribing a particular form of government, religion, philosophy, etc.; a department of knowledge or…

An explanation of a phenomenon arrived at through examination and contemplation of the relevant facts; a statement of one or more laws or…

The study of the general principles of a particular subject, phenomenon, or field of inquiry.

The systematic treatment of grammar. Obsolete. rare.

A body of related doctrines, a speculative system.

transferred and figurative (esp. of mental equipment and resources). Also attributive.

Scientific knowledge, a system of understanding; spec. (Foucault's term for) the body of ideas which shape the perception of knowledge in a…

a theory or philosophy of knowledge (used with reference to the work of J. G. Fichte, author of Grundlage der gesammten Wissenschaftslehre (1794)).

With singular agreement. The scientific theory or study of knowledge and understanding.