Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym ONBT is...

ONBT is

  • Orbiter Neutral Buoyancy Trainer

ONBT is also in:

Acronym Definition Searched: SJT DD HMJ SPR SSEB 8-] UCAS 60928 IRB AISD QMR IRA KHN IPAR RFBD