O in the Catholic Encyclopedia
Browse Encyclopedia by Alphabet
All | Oa | Ob | Oc | Od | Oe | Of | Og | Oh | Oi | Oj | Ok | Ol | Om | On | Oo | Op | Or | Os | Ot | Ou | Ov | Ow | Ox | Oz
O (274)
- O Antiphons: (Roman Breviary: Antiphonæ majores, "greater ...
- O Deus Ego Amo Te: The first line of two Latin lyrics sometimes attributed to St. ...
- O Filii et Filiæ: The first line of a hymn celebrating the mystery of Easter. ...
- O Salutaris Hostia: (O Saving Host). The first line of the penultimate stanza ...
- O'Braein, Tighernach: Irish annalist and Abbot of Roscommon and Clonmacnoise, ...
- O'Brien, Terence Albert: Born at Limerick, 1600; died there, 31 October, 1651. He ...
- O'Bruadair, David: An Irish poet, b. about 1625, most probably in the barony of ...
- O'Callaghan, Edmund Bailey: Physician, publicist, and historian, b. at Mallow, Cork, 29 ...
- O'Carolan, Torlogh: ( Irish, Toirdhealbhach O Cearbhalláin ). Usually ...
- O'Connell, Daniel: Daniel O'Connell was born at Carhen, near Cahirciveen, Co. ...
- O'Conor, Charles: Charles O'Conor was born in the city of New York, 22 January, ...
- O'Conor, Charles: Often called "the Venerable", b. at Belanagare, Co. Roscommon, ...
- O'Cullenan, Gelasius: (Or GLAISNE O'CULLENAN). Cistercian, Abbot of Boyle, ...
- O'Curry, Eugene: (EOGHAN O COMHRAIDHE) An Irish scholar, born at Dunaha ...
- O'Daly, Daniel: A diplomatist and historian, born in Kerry, Ireland, 1595; died ...
- O'Daly, Donogh Mór: (In Irish Donnchadh Mór O Dálaigh ) A ...
- O'Devany, Cornelius: (Conchobhar O'Duibheannaigh) Bishop of Down and Connor, ...
- O'Donnell, Edmund: The first Jesuit executed by the English government; b. at ...
- O'Donovan, John: Irish historian and antiquarian, b. at Atateemore, County ...
- O'Dugan, John: (Seághan "mor" O Dubhagáin) Died in ...
- O'Dwyer, Joseph: Physician, inventor of intubation; b. at Cleveland, 1841; d. in ...
- O'Fihely, Maurice: Archbishop of Tuam, born about 1460; died at Galway, 1513. He ...
- O'Growney, Eugene: Priest, patriot, and scholar, b. 25 August, 1863, at ...
- O'Hagan, John: Lawyer and man of letters, b. at Newry, County Down, ...
- O'Hagan, Thomas: First Baron of Tullyhogue, b. at Belfast, 29 May, 1812; d. 1 ...
- O'Hanlon, John: Born at Stradbally, Queen's County, Ireland, 1821; died at ...
- O'Hara, Theodore: Born in Danville, Kentucky, U.S.A. 11 February, 1822; died in ...
- O'Hely, Patrick: Bishop of Mayo, Ireland ; d. At Kilmallock, September, 1579. ...
- O'Herlahy, Thomas: (O' H I ARLAITHE ). Bishop of Ross, Ireland, d. 1579. ...
- O'Higgins, Ambrose and Bernard: Ambrose Bernard O'Higgins Born in County Meath, Ireland, in ...
- O'Hurley, Dermond: Archbishop of Cashel, Ireland ; died 19-29 June, 1584. His ...
- O'Hussey, Maelbrighte: (Irish, Maol Brighde ua Heodhusa ; Latin, Brigidus ...
- O'Leary, Arthur: Franciscan, preacher, polemical writer, b. at Faniobbus, ...
- O'Loghlen, Michael: Born at Ennis, Co. Clare, Ireland, in 1789; died 1846. ...
- O'Meara, Kathleen: Novelist and biographer, b. in Dublin, 1839; d. in Paris, 10 ...
- O'Neill, Hugh: Earl of Tyrone, b. 1550, d. Rome, 1616; he was the youngest son ...
- O'Neill, Owen Roe: Born 1582; died near Cavan, 6 Nov., 1649, the son of Art O'Neill ...
- O'Queely, Malachias: (Maolsheachlainn O Cadhla). Archbishop of Tuam, Ireland, ...
- O'Reilly, Bernard: Historian, b. 20 Sept., 1820, in County Mayo, Ireland ; d. ...
- O'Reilly, Edmund: Archbishop of Armagh, b. at Dublin, 1616; d. at Saumur, ...
- O'Reilly, Edmund: Theologian, b. in London, 30 April, 1811; d. at Dublin, 10 ...
- O'Reilly, Hugh: Archbishop of Armagh, head of the Confederates of Kilkenny, ...
- O'Reilly, John Boyle: Poet, novelist, and editor, b. at Douth Castle, Drogheda, ...
- O'Reilly, Myles William Patrick: Soldier, publicist, littérateur , b. near Balbriggan, ...
- O'Rorke, Patrick Henry: Soldier, b. in County Cavan, Ireland, 25 March, 1837; killed at ...
- O'Sullivan Beare, Philip: Born in Ireland, c. 1590; died in Spain, 1660, son of Dermot ...
- O'Toole, Saint Lawrence: (L ORCAN UA T UATHAIL ; also spelled Laurence O'Toole) ...
- Oakeley, Frederick: Born 5 September, 1802, at Shrewsbury ; died 30 Jan., 1880, at ...
- Oates's Plot: A term conventionally used to designate a "Popish Plot" which, ...
- Oaths: I. NOTION AND DIVISIONS An oath is an invocation to God to ...
- Oaths, English Post-Reformation: The English Reformation having been imposed by the Crown, it ...
- Oaxaca: (Or ANTEQUERA). Situated in the southern part of the ...
- Obazine, Monastery of: Located in the Diocese of Tulle ; founded by St. Stephen of ...
- Obba: Titular see in Byzacena, northern Africa of unknown history, ...
- Obedience: Obedience (Lat. obêdire, "to hearken to", hence "to obey") ...
- Obedience, Religious: Religious obedience is that general submission which religious ...
- Obedientiaries: A name commonly used in medieval times for the lesser ...
- Oblate Sisters of Providence: A congregation of negro nuns founded at Baltimore, Maryland, ...
- Oblates of Mary Immaculate: I. NAME AND ORIGIN The first members of this society, founded ...
- Oblates of St. Francis de Sales: A congregation of priests founded originally by Saint ...
- Oblati, Oblatæ, Oblates: Oblati (Oblatæ, Oblates) is a word used to describe any ...
- Obligation: A term derived from the Roman civil law , defined in the ...
- Obregonians: (Or Poor Infirmarians) A small congregation of men, who ...
- Obreption: ( Latin ob and repere , "to creep over"). A canonical ...
- Observatory, Vatican: The Vatican Observatory now bears the official title, "Specola ...
- Occam, William of: Fourteenth-century Scholastic philosopher and controversial ...
- Occasionalism: Occasionalism (Latin occasio ) is the metaphysical theory ...
- Occasions of Sin: Occasions of Sin are external circumstances--whether of ...
- Occleve, Thomas: (Or Hoccleve) Little is known of his life beyond what is ...
- Occult Art, Occultism: Under this general term are included various practices to which ...
- Occurrence: (IN LITURGY) I. DEFINITION Occurrence is the coinciding or ...
- Oceania, Vicariate Apostolic of Central: The whole of Oceania had at first been entrusted by the ...
- Ockham, William of: Fourteenth-century Scholastic philosopher and controversial ...
- Octavarium Romanum: The Octavarium Romanum is a liturgical book which may be ...
- Octave: I. ORIGIN It is the number seven, not eight, that plays the ...
- Odense, Ancient See of Odense: (OTHINIA, OTHONIENSIS.) The diocese included the islands ...
- Odescalchi, Carlo: Cardinal, prince, archbishop, and Jesuit, b. at Rome, 5 ...
- Odilia, Saint: Patroness of Alsace, born at the end of the seventh century; ...
- Odilo, Saint: Fifth Abbot of Cluny (q.v.), v.c. 962; d. 31 December, 1048. ...
- Odin, John Mary: Lazarist missionary, first Bishop of Galveston and second ...
- Odington, Walter: An English Benedictine, also known as WALTER OF EVESHAM, by ...
- Odo of Cambrai, Blessed: Bishop and confessor, also called ODOARDUS; born at ...
- Odo of Canterbury: Abbot of Battle, d. 1200, known as Odo Cantianus or of Kent. ...
- Odo of Cheriton: Preacher and fabulist, d. 1247. He visited Paris, and it was ...
- Odo of Glanfeuil: (Saint-Maur-sur-Loire) Abbot, ninth-century hagiographer. ...
- Odo, Saint: Second Abbot of Cluny, born 878 or 879, probably near Le ...
- Odo, Saint: (Oda) Archbishop of Canterbury, d. 2 June, 959 (not in 958; ...
- Oertel, John James Maximilian: Journalist, born at Ansbach, Bavaria, 27 April, 1811; died at ...
- Oettingen: (ALTÖTTING, OETINGA) Oettingen, during the ...
- Offa: Offa, King of Mercia, died 29 July, 796. He was one of the ...
- Offerings: (OBLATIONS) I. THE WORD OBLATION The word oblation , from ...
- Offertory: (Offertorium.) The rite by which the bread and wine are ...
- Office of the Dead: I. COMPOSITION OF THE OFFICE This office, as it now exists in ...
- Office, Divine: ("Liturgy of the Hours" I. THE EXPRESSION "DIVINE OFFICE" ...
- Ogdensburg, Diocese of: (Ogdensburgdensis). Comprises the northern towns of Herkimer ...
- Oggione, Marco D': Milanese painter, b. at Oggionno near Milan about 1470; d. ...
- Ogilvie, John, Venerable: Eldest son of Walter Ogilvie, of Drum, near Keith, Scotland, b. ...
- Ogliastra: DIOCESE OF OGLIASTRA (OLEASTRENSIS) Diocese in the Province ...
- Ohio: The seventeenth state of the American Union, admitted on 19 ...
- Ohler, Aloys Karl: Educationist, born at Mainz, 2 January, 1817; died there, 24 ...
- Oil of Saints: (Manna Oil of Saints). An oily substance, which is said to ...
- Oils, Holy: (OLEA SACRA). Liturgical Benediction Oil is a product of ...
- Ointment in Scripture: That the use of oily, fragrant materials to anoint the body is a ...
- Ojeda, Alonso de: Explorer; b. at Cuenca, Spain, about 1466; d. on the island of ...
- Okeghem, Jean d': Also called Okekem, Okenghem, Okegnan, Ockenheim. Contrapuntist, ...
- Oklahoma: I. GEOGRAPHY Oklahoma, the forty-sixth state to be admitted to ...
- Oláh, Nicolaus: (OLAHUS) Archbishop of Gran and Primate of Hungary, a ...
- Olaf Haraldson, Saint: Martyr and King of Norway (1015-30), b. 995; d. 29 July, ...
- Olba: A titular see in Isauria, suffragan of Seleucia. It was a ...
- Old Catholics: The sect organised in German-speaking countries to combat the ...
- Old Chapter, The: The origin of the body, fomerly known as the Old Chapter, dates ...
- Old Hall (St. Edmund's College): Located near Ware, Hertfordshire, England ; founded in 1793 ...
- Old Testament: I. NAME The word "testament", Hebrew berîth , Greek ...
- Old Testament, Canon of the: Overview The word canon as applied to the Scriptures has ...
- Oldcorne, Ven. Edward: Martyr, b. 1561; d. 1606. His father was a Protestant, and his ...
- Oldenburg: A grand duchy, one of the twenty-six federated states of the ...
- Oldham, Hugh: Bishop of Exeter, b. in Lancashire, either at Crumpsell or ...
- Oldoini, Augustino: Historian and bibliographer, b. 6 Jan., 1612; d. at Perugia, 23 ...
- Olenus: A titular see and suffragan of Patras, in Achaia Quarta, one ...
- Olesnicki, Zbigniew: (Sbigneus) A Polish cardinal and statesman, b. in Poland, ...
- Olier, Jean-Jacques: Founder of the seminary and Society of St-Sulpice, b. at ...
- Olinda: Diocese in the north-east of Brazil, suffragan of San Salvador ...
- Oliva: A suppressed Cistercian abbey near Danzig in Pomerania, ...
- Oliva, Gian Paolo: Born at Genoa, 4 October, 1600; died at Rome, at Sant' Andrea ...
- Olivaint, Pierre: Pierre Olivaint was born in Paris, 22 Feb., 1816. His father, a ...
- Oliver, George: Born at Newington in Surrey in 1781; died at Exeter in 1861. ...
- Olivet, Mount: (Latin, Mons Olivertus .) Occurring also in the English ...
- Olivetans: A branch of the white monks of the Benedictine Order, ...
- Olivi, Pierre Jean: (PETRUS JOHANNIS) A Spiritual Franciscan and theological ...
- Olivier de la Marche: Chronicler and poet, b. 1426, at the Chateau de la Marche, in ...
- Ollé-Laprune, Léon: French Catholic philosopher, b. in 1839; d. at Paris, 19 Feb., ...
- Olmütz: (OLOMUCENSIS) Archdiocese in Moravia. It is probable that ...
- Olympias, Saint: Born 360-5; died 25 July, 408, probably at Nicomedia. This ...
- Olympus: A titular see of Lycia in Asia Minor. It was one of the chief ...
- Omaha: (OMAHENSIS) The Diocese embraces all that part of the State ...
- Ombus: Titular see and suffragan of Ptolemais in Thebais Secunda. The ...
- Omer, Saint: Born of a distinguished family towards the close of the sixth ...
- Omission: (Latin omittere , to lay aside, to pass away). "Omission" ...
- Omnipotence: (Latin omnipotentia , from omnia and potens , able to ...
- Onias: ( ’Onías ). Name of several Jewish pontiffs ...
- Ontario: Ontario, the most populous and wealthy province of Canada, ...
- Ontologism: (from on, ontos , being, and logos , science) ...
- Ontology: ( on, ontos , being, and logos , science, the science or ...
- Oostacker, Shrine of: A miraculous shrine of the Blessed Virgin, and place of ...
- Opening Prayer (in the Mass): The name now used only for short prayers before the Epistle in ...
- Ophir: Ophir, in the Bible , designates a people and a country. ...
- Oporto: (Portucalensis) Diocese in Portugal ; comprising 26 civil ...
- Oppenordt, Gilles-Marie: (Oppenord) Born in Paris, 1672; died there, 1742; a ...
- Oppido Mamertina: Diocese ; suffragan of Reggio Calabria, Italy, famous for its ...
- Optatus, Saint: Bishop of Milevis, in Numidia, in the fourth century. He was ...
- Optimism: Optimism (Latin optimus , best) may be understood as a ...
- Option, Right of: In canon law an option is a way of obtaining a benefice or a ...
- Oracle: ( oraculum; orare , to speak). A Divine communication ...
- Oran: (ORANENSIS). Diocese in Algiers, separated from the ...
- Orange Free State: The Orange Free State, one of the four provinces of the Union of ...
- Orange River: (also the PREFECTURE APOSTOLIC OF GREAT NAMAQUALAND) Located ...
- Orange, Councils of: Two councils were held at Orange (Arausio), a town in the ...
- Orans: (Orante) Among the subjects depicted in the art of the ...
- Orate Fratres: The exhortation (" Pray brethren that my sacrifice and yours ...
- Oratorio: As at present understood, an Oratorio is a musical composition ...
- Oratory: (Latin oratorium , from orare , to pray ) As a ...
- Oratory of Saint Philip Neri, The: Under this head are included the Italian, Spanish, English, and ...
- Oratory, French Congregation of the: Founded in Paris at the beginning of the seventeenth century ...
- Orbellis, Nicolas d': Franciscan theologian and philosopher, Scotist ; born about ...
- Orcagna: (The conventional name in art history of A NDREA DI C IONE ...
- Orcistus: Titular see in Galatia Secunda. It is only mentioned in ...
- Ordeals: ( Iudicium Dei ; Anglo-Saxon, ordâl ; German Urteil ...
- Ordericus Vitalis: Historian, b. 1075; d. about 1143. He was the son of an English ...
- Orders, Holy: Order is the appropriate disposition of things equal and ...
- Orders, The Military: Including under this term every kind of brotherhood of knights, ...
- Ordinariate: (From Ordinary ). This term is used in speaking ...
- Ordinary: ( Latin ordinarius , i. e., judex ) An Ordinary in ...
- Ordines Romani: The word Ordo commonly meant, in the Middle Ages, a ritual ...
- Oregon: One of the Pacific Coast States, seventh in size among the ...
- Oregon City: (OREGONOPOLITAN). Includes that part of the state of Oregon ...
- Oremus: Invitation to pray, said before collects and other short ...
- Orense: (AURIENSIS) A suffragan of Compostela, includes nearly all ...
- Oresme, Nicole: Philosopher, economist, mathematician, and physicist, one of ...
- Organ: (Greek organon , "an instrument") A musical instrument ...
- Organic Articles, The: A name given to a law regulating public worship, comprising 77 ...
- Oria: (URITANA) Oria, in the Province of Lecce [now the Province ...
- Oriani, Barnaba: Italian Barnabite and astronomer, b. at Carignano, near ...
- Oriental Study and Research: In the broadest sense of the term, Oriental study comprises the ...
- Orientation of Churches: According to Tertullian the Christians of his time were, by ...
- Orientius: Christian Latin poet of the fifth century. He wrote an elegiac ...
Browse Encyclopedia by Alphabet
More Catholic Encyclopedia
Browse Encyclopedia by Alphabet
The Catholic Encyclopedia is the most comprehensive resource on Catholic teaching, history, and information ever gathered in all of human history. This easy-to-search online version was originally printed in fifteen hardcopy volumes.
Designed to present its readers with the full body of Catholic teaching, the Encyclopedia contains not only precise statements of what the Church has defined, but also an impartial record of different views of acknowledged authority on all disputed questions, national, political or factional. In the determination of the truth the most recent and acknowledged scientific methods are employed, and the results of the latest research in theology, philosophy, history, apologetics, archaeology, and other sciences are given careful consideration.
No one who is interested in human history, past and present, can ignore the Catholic Church, either as an institution which has been the central figure in the civilized world for nearly two thousand years, decisively affecting its destinies, religious, literary, scientific, social and political, or as an existing power whose influence and activity extend to every part of the globe. In the past century the Church has grown both extensively and intensively among English-speaking peoples. Their living interests demand that they should have the means of informing themselves about this vast institution, which, whether they are Catholics or not, affects their fortunes and their destiny.
Browse the Catholic Encyclopedia by Topic
Copyright © Catholic Encyclopedia. Robert Appleton Company New York, NY. Volume 1: 1907; Volume 2: 1907; Volume 3: 1908; Volume 4: 1908; Volume 5: 1909; Volume 6: 1909; Volume 7: 1910; Volume 8: 1910; Volume 9: 1910; Volume 10: 1911; Volume 11: - 1911; Volume 12: - 1911; Volume 13: - 1912; Volume 14: 1912; Volume 15: 1912
Catholic Online Catholic Encyclopedia Digital version Compiled and Copyright © Catholic Online
Most Popular
Pope Francis says atheists can do good and go to heaven too! Read More
There's the problem! Americans are out of touch with scientific consensus on climate change Read More
Culture of Corruption: Why Obama's misuse of Marines is wrong Read More
Bill Donohue, Catholic League, Disclose Fight with the IRS, Demonstrate Courage Read More
Receiving the Eucharist: I Have Decided to Kneel For Jesus Read More
Daily Readings
Reading 1, Sirach 6:5-17
A kindly turn of speech attracts new friends, a courteous ... Read More
Psalm, Psalms 119:12, 16, 18, 27, 34, 35
Blessed are you, Yahweh, teach me your will! Read More
Gospel, Mark 10:1-12
After leaving there, he came into the territory of Judaea and ... Read More
Saint of the Day
St. David I of Scotland
May 24: David, the youngest son of Scotland’s virtuous queen, (Saint) ... Read More
Latest Videos
Pope Francis speaks of Christian originality View Video
President of El Salvador gives Pope a relic of Msgr. Romero View Video
Pope meets with Italian bishops to lead a Profession of Faith, before the tomb of St. Peter View Video
Kevin Durant Meets With Volunteers and Families Affected by Tornadoes View Video
American appointed to head Order of Friars Minor View Video
Marketplace
Queen of Peace Bookstore
We have a very large selection of good Catholic Books and Bibles. ... Read More
St. Christopher Unique Catholic Jewelry. Saint Christopher Seaglass Read More


















