This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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v. Present participle of materialize.

"The video incorporates stop motion, visual effects, and motion graphics techniques, and tells the tale of an artist who enters his personal sanctuary and is "presented with a hand-crafted drawing tool that assists him in materializing his mental impressions.""

spiritualize   

materialized    materializes    materializing   

hap    take place    come about    fallout    pass off   

come out    appear   

materialized    materializing   

materiate    externalize    externate    externize    exteriorize