o/a

abbr. on or about

on or about.

O/A

Abbr. for “on approval.”

Abbr. for “on approval.”

Acronym	Definition
O/A➣Operating As (legal entity term)
O/A➣On or After
O/A➣On Or About
O/A➣Outside Air
O/A➣Operations/Administrative
O/A➣Obligational Authority
O/A➣Ordnance Alteration

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