polypsychism en · NOUN
Etymology
From poly- + Ancient Greek ψυχή (psukhḗ, “soul”) + -ism.
Meanings
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(uncountable) The belief that a person may have multiple souls; the theory that one's mind can contain multiple psychic elements.
Jung's famous “complex theory” […] is based on a model of the mind that emphasized dissociation and polypsychism.
1994, Richard Noll, The Jung Cult, Fontana Press, published 1996, page 31: