The Collaborative International Dictionary of English v.0.48:
internalize \internalize\ v. t. (Psychology) to incorporate within oneself. Syn: internalise, interiorize, interiorise. [WordNet 1.5]WordNet (r) 3.0 (2006):
internalize v 1: incorporate within oneself; make subjective or personal; "internalize a belief" [syn: internalize, internalise, interiorize, interiorise]