The process of making something ethereal, light, or spiritual; the act of removing material or earthly qualities.
From etherealize plus -ation (suffix forming nouns of action or result). American English spelling with -ize and -ation.
The -ization suffix is incredibly productive in English — it can turn almost any adjective into both a verb and a noun, creating parallel word families like realize/realization, materialize/materialization, etherealize/etherealization.
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