Browse Abbreviations Starting with O

List of acronyms, initialisms, and meanings beginning with the letter O.

OIM OAD OED Os OFT OCI OTOH OPS OD OM ODCR OCD OBE OBDC OTS OS/2 OOL OER OCS OFS OMC OPT OTA OOF OPE OTIS OV OSB OCW O/S ODAA OPCW OPPM OCT OTT OMG
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