Pronunciation: (ik-stûr'nl-īz"), [key]
—v.t., -ized, -iz•ing.
1. to make external; embody in an outward form.
2. to regard as consisting of externals.
3. to regard or treat as being caused by externals; attribute to external causes: to externalize one's difficulties.
4. to direct (the personality) outward in social relationships. Also, esp. Brit.,ex•ter'nal•ise".
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.