1 [in singular] an act of becoming fully aware of something as a fact:a growing realization of the need to create common economic structures [mass noun]:realization dawned suddenly
2 [mass noun] the achievement of something desired or anticipated:he did not live to see the realization of his dream
[count noun] an actual form given to a concept or work:a perfect realization of Bartók’s Second Violin Concerto on disc
Linguistics the way in which a particular linguistic feature is used in speech or writing on a particular occasion:verbal sequences were produced using segmental realization [count noun]:vowels have a startlingly wide range of realizations
[count noun] Mathematics an instance or embodiment of an abstract group as the set of symmetry operations of some object or set.
[count noun] Statistics a particular series which might be generated by a specified random process.
3 [mass noun] the conversion of an asset into cash:the realization of his assets in Spain
[count noun] a sale of goods:auction realizations
realization in other Oxford dictionaries
Definition of realization in the US English dictionary