Obsidionalis Rarest of honors, given to a Legate who broke the siege of a beleaguered army.
Offices Cursus Honorum in Imperial Rome.
Onager The Roman catapult.
Ops From the Greek adopted Goddess of the fertile earth, abundance, sowing, harvest and wealth.
Optio Low-Level Officers, second in command after the Centurion.
Orcus God of death and the underworld.
Origen Early Christian philosopher and scholar.
Ovid Writer of Metamorphases.
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