psychology
B1Substantiv/US /saɪkˈɑlədʒiː/ sīk-ÄL-əj-ē; UK /saɪkˈɑlədʒiː/ sīk-ÄL-əj-ē/
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.
