The Collaborative International Dictionary of English v.0.48:
exteriorization \exteriorization\ n. embodying in an outward form. Syn: externalization, externalisation, exteriorisation. [WordNet 1.5]WordNet (r) 3.0 (2006):
exteriorization n 1: embodying in an outward form [syn: externalization, externalisation, exteriorization, exteriorisation]