re ‧ a ‧ li ‧ za ‧ tion BrE AmE ( also realisation British English ) /ˌrɪəlaɪˈzeɪʃ ə n $ -lə-/ noun [singular, uncountable]
[ Word Family: noun : ↑ realism , ↑ realist , ↑ reality , ↑ unreality , ↑ realization ; adverb : ↑ real , ↑ really , ↑ realistically ≠ ↑ unrealistically ; adjective : ↑ real , ↑ unreal , ↑ realistic ≠ ↑ unrealistic ; verb : ↑ realize ]
1 . when you understand something that you had not understood before
I was shocked by the realization of what I had done.
the realization that she might never recover from her illness
There is a growing realization that we must manage the earth’s resources more carefully.
2 . formal when you achieve something that you had planned or hoped for SYN achievement
the realization of his dreams
3 . technical when you change something into money by selling it:
the realization of assets