from
The Collaborative International Dictionary of English v.0.48
Psychology \Psy*chol"o*gy\, n. pl. {Psychologies}. [Psycho- +
-logy: cf. F. psychologie. See {Psychical}.]
The science of the human soul; specifically, the systematic
or scientific knowledge of the powers and functions of the
human soul, so far as they are known by consciousness; a
treatise on the human soul.
[1913 Webster]
Psychology, the science conversant about the phenomena
of the mind, or conscious subject, or self. --Sir W.
Hamilton.
[1913 Webster]