| OED requirements | antedating 1957 |
| Earliest cite | John Victor Peterson, 'The Gently Orbiting Blonde' |
| Comment | Jeff Prucher submitted a 2003 cite from Theodore Stugeon's 1957 "The Pod in the Barrier". Katrina Campbell submitted a cite for the form "nulgrav" from a 1981 reprint of E. C. Tubb's 1967 "The Winds of Gath"; Mike Christie verified it in a 1976 reprint. Fred Galvin submitted a 1957 cite from John Victor Peterson's "The Gently Orbiting Blonde". |
| Last modified | 5 October, 2009 |
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| 1985 M. W. Bonanno Dwellers in Crucible i.10 | Jim Kirk announced to all and sundry lounging around the null-grav pool during their offshift. |
| 1996 D. Carey Invasion! vi. 81 | I've got him mounted on a null-grav pad. |