O

obedience

obeisance

object

objectify

objective

objectivization

objectivity

oblation

oblation theories

obligation

obscurantism

observant

obsession

obsignatio fidei (L.)

Occasmism

occasionalism

occult

occultism

Ockhamism

odium thelogicum (L.)

oecumenic, -cal

offence

offense

offer

offering

offertory

office

officiant

officiate

oikonomia (Gr.)

oikoumene (Gr.)

ointment

Old Catholic Church

Old Catholics

omega (Gr.)

omne vivum ex ovo (L.) (all living beings come from the egg)

omniconscience

omnipotence

omnipresence

omniscience

One

ontic

ontologism

ontology

openness

opera ad extra (L.)

opera ad intra

operari sequitur esse (L.) (action follows being)

operation

opinion

opposition

oppression

optimism

option for the poor

opus Dei (L.)

opus mortificatum (L.)

opus operantis (L.)

opus operatum (L.)

opus supererrogatorium (L.)

opus vivificatum (L.)

oracle

Orange, Second Council of

oration

oratory

order

ordinance

ordinand

ordinant

ordinariate

ordinary

ordination

Organic Articles

Oriental Churches

oriental rites

Origenism

origin

orginal sin

ornatus animae (L.) (ornament of the soul)

Orphism

orthodox

Orthodox Churches

orthodoxy

orthogenesis

orthopraxy

Osiandrian controversy

osmosis

ostiariate

other world

otherworldliness

Our Lady

Our Lord

ousia (L.)

overseer

Oxford movement


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