| Definition | a portal allowing travel or communication between dimensions, alternate universes, etc. |
| OED requirements | antedating 1933 |
| Earliest cite | Harl Vincent, 'Wanderer of Infinity' |
| Comment | Fred Galvin submitted a 1947 cite from Erik Fennel's "Black Priestess of Varda". Fred Galvin submitted a 1948 cite from James Blish's "Against the Stone Beasts". Fred Galvin submitted a 1947 cite from Henry Kuttner's "Way of the Gods". Fred Galvin submitted a cite from a 1977 reprint of Leigh Brackett's 1944 "The Veil of Astellar". Fred Galvin submitted a 1942 cite from Paul Edmonds' (aka Henry Kuttner) "Night of the Gods". Fred Galvin submitted a cite from a 1946 reprint of Nelson S. Bond's "The Monster from Nowhere"; we would like to verify this in its first appearance in the July 1939 Fantastic Adventures. Jeff Prucher submitted a cite from a 1970 reprint of Harl Vincent's "Wanderer of Infinity": Mike Christie verified this in its first publication in Astounding Stories, 1933 |
| Last modified | 10 December, 2009 |
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| 1947 E. Fennel Black Priestess of Varda in Planet Stories Winter 22/1 | The progressive civilization of the Superiors had been interrupted by alien creatures, the Luvans, who had opened a Gateway from another world. |
| 1947 H. Kuttner Way of Gods in Thrilling Wonder Stories April 15/2 | He shrugged his wings together and stooped to enter the gateway of the new world. Behind them the old man watched in silence, seeing the work of his lifetime ending. The gulf between them was too broad for leaping. He was human and they were not. Across a vast distance, vaster than the gulf between worlds, he saw the family of the mutations step over their threshold and vanish forever. |
| 2004 P. F. Hamilton Pandora's Star i. 21 | Sleek white passenger expresses flashed past pulling dozens of carriages; multiworld commuters, whose route would take them through twenty or more planets as they rushed from gateway to gateway on a never-ending circuit. |