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

OMSTAIN is

  • One More Sign The Apocalypse Is Nigh

OMSTAIN is also in:

Acronym Definition Searched: NTRC GSIS DLB 52339 WKLO NWP STBY CDC EMC BM WDT DKR MDT ASSS WK