PHYSICAL PART, is that which, though it enter the composition of a whole, may yet be considered apart, and under its own distinct idea; in which sense, a continuum is said to consist of parts. Physical parts, again, are of two kinds, homogeneous and heterogeneous; the first are those of the same denomination with some other; the second of a different one: See HOMOGENEOUS, &c. Parts, again, are distinguished into subjective, essential, and integrant. The schoolmen were also the authors of this division.