Meaning

noun a musical composition that has been completed or enriched by someone other than the composer

noun coming to understand something clearly and distinctly

noun a sale in order to obtain money (as a sale of stock or a sale of the estate of a bankrupt person) or the money so obtained

originFrom French réalisation, from Middle French, as if realise + -ation.

Etymology from Wiktionary, CC BY-SA 3.0