This word is acceptable for play in the UK dictionary that is being used in the following games:

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n. same as exteriorization.

n. embodying in an outward form

"In his unconscious state he hears the voice of a mysterious Magician from the past, Al Nafuur, who tells him that he now has the power of “exteriorisation” in which his body can be at two places at the same time."

objectification   

exteriorization   

externalization    externalisation    exteriorization