Full record for other-dimensional adj.

Definition of or from another dimension
OED requirements antedating 1934
Earliest cite C. L. Moore, 'Scarlet Dream'
Comment Fred Galvin submitted a 1948 cite from a letter from Marion Zimmer in Startling Stories.
Fred Galvin submitted a 1951 cite from Bruce Elliott's "The Devil Was Sick".
Fred Galvin submitted a cite from a 1953 reprint of Catherine.L. Moore's "Scarlet Dream"; Alistair Durie verified it from the 1934 first appearance.

Earliest cite in the OED (though not strictly SFnal) is from 1940

Last modified 3 August, 2009

Citations for other-dimensional adj.

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1934 C. L. Moore Scarlet Dream in Weird Tales May 579/2 When he lifted his eyes to the wall, he knew where he was. Blazoned on the dim stone, burning through the twilight like some other-dimensional fire, the scarlet pattern writhed across the wall.
1948 Startling Stories July 127/2 Could be my double in one of those other-dimensional worlds, maybe?????
2001 Sci. Fiction Chron. July 32/1 Eilan is raised on the Goddess-centered, other-dimensional (for lack of a better explanation) island of Avalon, beginning in the year AD 249.