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psychology (n.)
1650s, "the study of the soul," from Modern Latin psychologia, probably coined mid-16c. in Germany by Melanchthon from Latinized form of Greek psykhē "breath, spirit, soul" (see psyche) + logia "study of" (see -logy). The meaning "science or study of the phenomena of the mind" is attested by 1748, in reference to Christian Wolff's "Psychologia empirica" (1732). The modern behavioral sciences sense is from the early 1890s.

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Definitions of psychology from WordNet
Dictionary entries near psychology
psychohistory
psychokinesis
psychological
psychologist
psychologize
psychology
psychomancy
psychometrics
psychometry
psychomotor
psychopath