[f. next + -ATION.] The action or fact of visualizing; the power or process of forming a mental picture or vision of something not actually present to the sight; a picture thus formed.
1880. Nature, XXI. 15 Jan., 254/1. I find it very difficult to represent my visualisation of numerals diagrammatically. I scarcely ever see the lower numbers written; I simply know exactly where 6, 7, 4, &c., are to be found.
1883. Academy, 14 July, 31. Investigations into the phenomena of visualisation.
1884. Gurney & Myers in 19th Cent., July, 72. In the next stage of visualisation the percipient sees a face or figure projected or dejected, as it were, on some convenient surface.
1894. Athenæum, 10 Nov., 638/2. [The book had] a power of visualization that gave it a claim to real originality.
