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: DNR CDS PF CLR OWA FSC PNLK 38651 TMR FPC BPS POWER RAT GSE BSI