1. [n]  something that is made real or concrete; "the victory was the realization of a whole year's work"
2. [n]  making real or giving the appearance of reality
3. [n]  the completion or enrichment of a piece of music left sparsely notated by a composer
4. [n]  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
5. [n]  coming to understand something clearly and distinctly; "a growing realization of the risk involved"; "a sudden recognition of the problem he faced"
6. [n]  a musical composition that has been completed or enriched by someone other than the composer

REALIZATION is a 11 letter word that starts with R.