mindscapen.
/ˈmʌɪn(d)skeɪp/, U.S. /ˈmaɪn(d)ˌskeɪp/ The range of a person's thoughts and imagination, regarded as a panorama capable of being contemplated by another person; mental landscape or inner vision. Also in extended use.
ΘΚΠ
the mind > mental capacity > thought > product of thinking, thought > [noun] > systematic structure
thought-construction1861
thought scheme1881
thought-world1904
mindscape1930
the mind > mental capacity > thought > product of thinking, thought > matter of thought > [noun] > mental model
landscape1612
thought-picture1844
mindscape1930
1930 Sat. Rev. Lit. (U.S.) 27 Dec. 486/3 One may..strive to..obtain a meager impression—starved, wry glimpses—of the private mindscape beyond.
1942 K. Patchen Dark Kingdom 83 They had been left to contemplate The beautiful omnipotence of reason. Chalk coasts steam under the moons Of this devastated mindscape.
1969 Amer. Lit. 41 374 In both these modes of experiencing the timelessness of Now, reality is diffused simultaneously over the entire mindscape.
1990 Plays Internat. May 36/1 Cale has taken us on an increasingly angry, frenetic, and often painful autobiographical trip through some often surreal mindscapes.
2000 Sunday Herald (Glasgow) (Electronic ed.) 10 Sept. The inside of his mind proves to be a dangerous and frightening place. And so Tarsem [sc. the film's director] pulls out the stops, creating an extraordinary CGI mindscape which..is fascinating to watch.
This is a new entry (OED Third Edition, March 2002; most recently modified version published online March 2022).
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n.1930