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

• Lexulous
• Wordscraper
• Wordosaur

n. Alternative spelling of etherealization.

See etherealization, etherealize.

"These Tuscan sculptors of the fifteenth century worked for the most part in low relief, giving even to their monumental effigies something of its depression of surface, getting into them by this means a pathetic suggestion of the wasting and etherealisation of death."

externalisation