| Definition | the language spoken by Plutonians |
| OED requirements | antedating 1958 |
| Earliest cite | W. F. Temple 'The Undiscovered Country' |
| Comment | Fred Galvin submitted a 1959 cite from William F. Temple's "The Undiscovered Country", in a 1959 US edition of Nebula Science Fiction magazine, which MIke Christie verified the 1958 UK edition.
We would like to see other examples of any date. |
| Last modified | 6 July, 2008 |
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| 1931 S. H. Coblentz Into Plutonian Depths in Wonder Stories Q. Spring 323/2 | Not less than eight or ten distinguished-looking Plutonians had been summoned for the occasion. |
| 1946 W. F. Jenkins From Beyond Stars in Thrilling Wonder Stories June 88/1 | I said, ‘You old Mercurian! You old Plutonian! You want to blow up Earth!’ |
| 1950 ‘L. F. Stone’ Rape of Solar System in Flight Into Space 242 | In Space they met, three great armada, armed to the teeth. From the first, Luna's was a losing battle. Together the Martians and Plutonians drove her back, passed on to earth. |
| 1958 W. F. Temple Undiscovered Country in Nebula Sci. Fiction Oct. 58 | I hope we learn enough Plutonian to say we're sorry. |
| 1959 D. A. Wollheim Secret of Ninth Planet 168 | In their landings, they had found inscriptions on walls and bas-reliefs carved on mountains. They knew from these what the Plutonians had looked like, and they had a suspicion of what had happened. |