=obsidiō, ōnis= [=obsideō=], f., _a siege_. =obtemperō, āre, āvī, ātus= [=temperō=, _to soften_], _to submit_. =obtineō=, see =teneō=. =obvius, a, um= [=ob= + =via=], adj., _in the way_, _meeting_; with =esse, fierī=, or =venīre=, _to meet_. =occāsiō, ōnis= [=occidō=, _to happen_], f., _an occasion_, _opportunity_. =Occidēns, tis= [=occidō=], m. (sc. =sōl=), _the setting sun_, _the West_, _the Occident_. =occīdō=, see =caedō=. =occulō, ere, culuī, cultus=, _to cover_, _cover over_; _hide_, _conceal_. =occultō, āre, āvī, ātus= [freq. of =occulō=], _to hide_, _conceal_; _secrete_. =occultus, a, um= [=occulō=], adj., _hidden_, _secret_, _concealed_. =occupō, āre, āvī, ātus= [=ob= + =capiō=], _to take possession of_, _seize_, _hold_, _occupy_; _attack_, _employ_. =occurrō=, see =currō=. =Ōceanus, ī=, m., the Atlantic and its divisions in contrast with the Mediterranean Sea. =Octāviāna, ae=, f., sister of Octavianus and wife of M. Antonius. =Octāviānus, ī=, m., see =Caesar, Augustus=. =Octāvius, ī=, m., _C. Octāvius_, consul 87 B.C. =octāvus, a, um= [=octō=], num. adj., _eighth_. =octingentēsimus, a, um= [=octingentī=], num. adj., _eight hundredth_. =octingentī, ae, a= [=octō= + =centum=], num. adj., _eight hundred_. =octō=, indecl. num. adj., _eight_. =octōdecim= [=octō= + =decem=], indecl. num. adj., _eighteen_. =octōgēsimus, a, um= [=octōgintā=], num. adj., _eightieth_. =octōgintā= [=octō=], indecl. num. adj., _eighty_. =oculus, ī=, m., _the eye_. =Odenāthus, ī=, m., ruler of Palmyra. He checked the incursions of the Persians, and was honored with the title of Augustus by Gallienus. =odēum, ī=, n., _a public building designed for musical performances_, _odeon_. =odium, ī= [=odī=, _to hate_], n., _hatred_, _aversion_. =odor, ōris=, m., _odor_, _stench_. =Oenomaus, ī=, m., a leader of the gladiators who revolted with Spartacus. =offēnsa, ae=, f., _disfavor_, _offense_, _hatred_, _enmity_. =offerō=, see =ferō=. =officium, ī= [=opus= + =faciō=], n., _service_, _favor_; _duty_, _office_. =Ogulnius, ī=, m., _Q. Ogulnius_, consul 269 B.C. =olim= [=ole=, old form of =ille=], adv., _formerly_. =Olympias, adis=, f., _an Olympiad_, the space of four years intervening between the games at Olympus. The period was used in assigning dates, the first Olympiad beginning in 776 B.C. =Olympus, ī=, m., a city in Lycia in Asia Minor. =ōmen, inis=, n., _a foreboding_, _prognostication_, _omen_. =omnīnō= [=omnis=], adv., _in all_, _altogether_, _only_, _in general_; _at all_. =omnis, e=, adj., _every_, _all_. =opera, ae= [=opus=], f., _work_, _pains_, _aid_; _operam dare_, _to attend to_, _assist_, _aid_. =opifex, ficis= [=opus= + =faciō=], m., _workman_, _artisan_. =opīnor, ārī, ātus sum=, _to think_, _believe_. =oppidum, ī=, n., _a walled town_. =Oppius, ī=, m., see =Sabīnus=. =opprimō=, see =premō=. =oppūgnātiō, ōnis= [=oppūgnō=], f., _an assault_, _attack_, _siege_. =oppūgnō=, see =pūgnō=.