in transit os meaning

in transit os meaning may refer to a tracking message seen in USPS or other carrier systems. “OS” could be shorthand for “origin scan” or “origin sort,” indicating the package has left the originating facility and is on its way to the next stop. This status helps buyers track progress and predict estimated delivery dates. Though such abbreviations can vary between carriers, the overall meaning is that the parcel is actively moving within the shipping network and has not encountered any delays so far.