psychology Meaning, Definition & Usage

  1. noun the science of mental life
    psychological science.

WordNet

Psy*chol"o*gy noun
Etymology
Psycho- + -logy: cf. F. psychologie. See Psychical.
Wordforms
plural Psychologies
Definitions
  1. 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.
    Psychology, the science conversant about the phenomena of the mind, or conscious subject, or self. Sir W. Hamilton.

Webster 1913