- A Kempis, Thomas
- A solis ortus cardine
- A.A.
- A.A.S.
- A.B.
- a.b.c., an
- A.C.
- A.D.
- A.M.
- A.M.D.G.
- A.P.A.
- A.R.M.
- Aa, Peter Van der
- Aachen
- Aagard, Niels
- Aali, Mehemet
- Aaron
- Aasen, Ivar
- abacus
- Abad e Illanar, Manuel de
- Abadamloora, Lucas
- abaddon
- abandonment
- abbé
- Abba Salama
- abba
- Abban
- abbess
- abbey nullius of Belmont, North Carolina
- abbey nullius
- abbey of Abingdon
- abbey of Ampleforth
- abbey of Athelney
- abbey of Bursfeld
- abbey of Bury Saint Edmunds
- abbey of Citeaux
- abbey of Clonmacnoise
- abbey of Crowland
- abbey of Croyland
- abbey of Dorchester, England
- abbey of Dryburgh, Scotland
- abbey of Echternach
- abbey of Einsiedeln
- abbey of Epternach
- abbey of Saint Michael and All Angels
- Abbey, Bath
- Abbey, Belmont
- Abbey, Benedictbeurn
- Abbey, Boyle
- Abbey, Buckfast
- Abbey, Cerne
- Abbey, Downside
- Abbey, Dunfermline
- Abbey, Evesham
- Abbey, Saint Maurice of Agaunum
- abbey
- abbeylubber
- abbot general
- abbot of unreason
- abbot president
- abbot primate
- abbot, commendatory
- abbot, lay
- abbot, regular
- abbot, secular
- Abbot, The
- abbot, titular
- abbot
- abbreviations
- abbreviators, ecclesiastical
- Abdenago
- Abdias
- abdication
- Abdon
- abduction
- Abdul Aziz
- Abdul Hamid Zia Pasha
- Abdul-Hamid II
- Abecedarians
- Abel
- Abelard, Peter
- Abelites
- Abelonians
- Abercius, Inscription of
- Abercorn
- Abercromby, Robert
- Aberdeen Breviary
- Aberdeen, University of
- Abernethy, Perthshire, Scotland
- Abiathar
- Abilene
- Abingdon, Abbey of
- Abiron
- abjuration
- ablution
- Abner
- Abomination of Desolation
- abortion
- abp.
- Abraham de Georgiis and Companions
- Abraham in Liturgy
- Abraham's Bosom
- Abraham's Oak
- Abraham-men
- Abraham
- Abram-men
- Abrincalae
- abrogation
- Absalom
- absidiale
- absolute
- Absolution, General
- absolution
- Abstinence, Law of
- abthain
- abthane
- Abulfaraj
- abuse of office
- abuse of power
- abyss
- Abyssinia
- Abyssinian Church
- Académie David
- Academies, Roman
- Acadia
- Acathistus
- access
- accident
- accidents, Eucharistic
- acclamation
- accolade
- accommodation, Biblical
- Achaia
- Achaicus
- Achilles
- Achilli, Giovanni Giacinto
- Achimelech
- achiropoeta
- Achitophel
- acolouthia
- acolyte
- Acre
- acrostic
- act of God
- Act of Settlement (English)
- Act of Settlement (Irish)
- Act of Supremacy
- Act of Toleration
- Act, Ecclesiastical Titles
- Acta Apostolicre Sedis
- Acta Sanctorum Hiberniae
- Acta Sanctorum
- Acta Sanctre Sedis
- Acta Triadis Thaumaturgae
- Actaeon
- Action Francaise
- Acton, John
- Actor Ecclesire
- Acts and Monuments
- Acts of Martyrs
- Acts of the Apostles
- Acts, Canonical
- Acts, Human
- Acts, Indifferent
- actual grace
- actual sin
- acus
- ad bestias
- ad libitum
- ad limina apostolorum
- Ad Majorem Dei Gloriam
- ad metalla
- Ad regias Agni dapes
- Adam Bede
- Adam de Marisco
- Adam de Marsh
- Adam's apple
- Adam's apple
- Adam's Peak
- Adam
- Adams, John Quincy
- Adams, John
- Addeus and Maris, Liturgy of
- Addison, Joseph
- Adeste Fideles
- adjuration
- administration Apostolic
- administration of the Sacraments
- administrator
- admonitions, canonical
- Adonai
- Adonis
- adoption, canonical
- adoption, supernatural
- Adoptionism
- Adoration of the Blessed Sacrament
- Adoration of the Cross
- Adoration of the Magi
- Adoration, Perpetual
- adoration
- Adoro Te devote, latens Deitas
- Adrian Dedel
- Adrumetum
- Adullam
- adult Baptism
- adult
- adultery
- Advent ce
- Advent ncd
- Advent
- Adventists
- Advertisements, Book of
- Advocate of God
- Advocate, Devil's
- Advocate
- Advocates of Roman Congregations
- advowson
- Aebbercurnig
- Aelfric the Grammarian
- aeon
- aer
- aesthetics
- Aeterna caeli gloria
- Aeterna Christi munera
- Aeterne Rector siderum
- Aeterne rerum Conditor
- Aeterne Rex altissime
- affections
- affinity
- Afghanistan
- African Church
- African Methodist Episcopal Church
- African Methodist Episcopal Zion Church
- African Missions of Lyons
- African Rite
- Agag
- agape
- agapetae
- Agar
- Age of Discretion
- Age of Reason
- age of reason
- age, canonical
- age, impediment of
- Aged Poor Society
- Aggeus
- aggressor, unjust
- Agios O Theos
- Aglar
- Aglipay, Gregorio
- Agnesi, Maria Gaetana
- agnetz
- agnoetre
- Agnosticism
- Agnus Dei
- Agolanti, Chiara
- Agony of Christ
- Agostino Ciasca
- agrapha
- Agreda, Maria de
- Agricola (Bauer), Georg
- Aherne, Cornelius
- Ahriman
- Aiguillon, Marie de Vignerot de Pontcourlay, Duchess of
- Aikenhead, Mary
- Ailleboust, Barbe d'
- Ailleboust, Louis d', Sieub de Coulanges
- Aillon, Joseph de la Roche d'
- Air Machine Blessing
- aisle
- Aix-la-Chapelle
- Aix-Marseilles, University of
- Alabama
- alabaster
- Alain de la Roche
- Alais, Peace of
- Alamo, The
- Alan of Tewkesbury
- Alan of Walsingham
- Alanus de Rupe
- Alaric
- Alascans
- Alaska
- alb
- Alban Butler ce
- Alban Butler ncd
- Alban Butler
- Alban, Epscop
- Albanel, Charles d'
- Albania
- Albany
- Albendorf
- Albert of Brandenburg
- Albert of Brandenburg-Ansbach
- Albert, Prince
- Albert
- Alberta University Catholic College
- Albertus Magnus College
- Albigenses
- Albini, Charles Dominique
- Albornoz, Gil Alvarez Carillo de
- Albrecht Dürer
- Albrecht
- Albright, Jacob
- Alcala de Henares
- Alcala, University of
- Alcantara, Military Order of
- Alcantarines
- Alciati, Giovanni Paolo
- Alemany, Joseph Sadoc
- Aleppines
- Aleric
- Ales diei nuntius
- Alessandra Lucrezia Romola
- Alessandro di Mariano Filipepi
- Alexander III, the Great
- Alexander Natalis
- Alexander Noel
- Alexander of Hales
- Alexandra, Christina
- Alexandria, Catechetical School of
- Alexandria, Clement of
- Alexandria, Dionysius of
- Alexandria, Egypt
- Alexandria, Patriarchate of
- Alexandrine Rite
- Alexians
|
- Alford, Michael
- Alfred the Great
- Algiers
- Algu´,José
- alien houses
- alien priories
- Alighieri, Dante
- alimentation
- aliturgical days
- All Hallows College
- All Hallows
- All Praise to Saint Patrick
- All Saints, Feast of
- All Souls Day ce
- All Souls Day ncd
- all-
- Allah
- Allard, Paul
- allegiance, civil
- allegiance
- allegorical sense
- allegory
- Alleluia
- Alleluiatic Psalms
- Allen, Frances
- Allerstein, August
- Allies, Mary Helen
- Allies, Thomas William
- Allion, Joseph de la Roche d'
- allocution
- Allouez, Claude
- Alma Mater
- Alma Redemptoris Mater
- Alma
- Almeida, John
- almoner
- almonry
- alms-bag
- alms-box
- alms-chest
- alms-day
- alms-deeds
- alms-folk
- alms-house
- alms-plate
- alms-Saturday
- alms
- Alonso de Espinosa
- alpha and omega
- alphabet, Cyrillic
- Alphabetic Psalms
- Alsace-Lorraine
- altar bell
- altar boys
- altar bread
- altar candles
- altar candlesticks
- altar canopy
- altar cards
- altar carpets
- altar cavity
- altar cloths
- altar cover
- altar crucifix
- altar curtains
- altar frontal
- altar herse
- altar horns
- altar in Scripture
- altar lamp
- altar lanterns
- altar ledge
- altar linens
- altar of Our Lady
- altar of repose
- altar of repository
- altar piece
- altar protector
- altar rail
- altar screen
- altar side
- altar societies
- altar steps
- altar stole
- altar stone
- altar tomb
- altar vase
- altar vessels
- altar wine
- altar, bye
- altar, double
- altar, epistle side of
- altar, fixed
- altar, high
- altar, Lady
- altar, main
- altar, portable
- altar, privileged
- altar, stripping of the
- altar
- altarage
- altars in the temple of Jerusalem
- altars of the tabernacle
- altars, consecration of
- alternation
- Altham, John
- Altieri, Emilio
- Alto ex Olympi vertice
- altruism
- Alumbrados
- alumnus
- Alva, Fernando Alvarez de Toledo, Duke of
- Alvarez de Paz
- Alzog, Johann Baptist
- ama
- Amadeans
- Amadeus of the Heart of Jesus, Mother Mary
- Amadeus VIII
- Amalarius of Metz
- Amalecites
- Amana Society
- ambassador
- ambition
- ambitus altaris
- ambo
- Ambrose Lisle March Phillipps De Lisle
- Ambrosian Basilica
- Ambrosian Chant
- Ambrosian Hymnography
- Ambrosian Library
- Ambrosian Rite
- Ambrosiani
- ambry
- ambulatory
- amen
- amende honorable
- America, Catholic Daughters of
- America, Central
- America (land)
- America (publication)
- American and Foreign Christian Union
- American Board of Catholic Missions
- American Catholic Church
- American Catholic Historical Association
- American Catholic Quarterly Review
- American College, Louvain, Belgium
- American Federation of Catholic Societies
- American Party
- American Protective Association
- American Rescue Workers
- American Salvation Army
- Americanism
- Amerigo Vespucci
- Amerikanisches Familienblatt
- Amerikanski Siovenec
- amice
- Amiens, France
- Ammen, Daniel
- Ammonian Sections
- Ammonites
- Amorrhites
- Amos
- amovability
- Ampere, Andre Marie
- Amphitheater, Flavian
- amphitheater
- amphorre
- Ampleforth, abbey of
- Ampthill, Odo Russell, Baron
- ampullae
- amra
- Amraphel
- Amsterdam
- amulet
- Anabaptists
- Anacletus I
- Anagni, Italy
- anagnostes
- anagogical sense
- analecta
- Analepsis
- analogy
- Anammelech
- Ananias
- anaphora
- anarchy
- anastasimatarion
- Anastasis, Church of the
- Anastasius Bibliothecarius
- anathema
- Anatole de Bengy
- anatomy
- ancestor worship
- Anchieta, Jose de
- anchor cross
- anchor
- anchoress
- anchorhold
- anchorite
- ancien regime
- Ancient of Days
- ancients
- ancilla Dei
- Ancilla Domini Sisters
- Ancren Riwle
- Andalusia, Spain
- Anderdon, William Henry
- Anderson, Henry James
- Anderson, Patrick
- Andorra
- Andrada, Antonio de
- Andrea Cesalpino
- Andrea Doria
- Andrea, Giovanni d'
- Andreis, Felix de
- Andrew of Wyntoun
- Andrews, William Eusebius
- Andronicus
- anesthesia
- Angélique Bullion
- angel lights
- Angel of Great Counsel
- Angel, Thy Holy
- Angel-Guardians of Men, Spirits and Powers We Sing
- angel
- Angeli, Girolamo degli
- Angelic Hymn
- Angelic Salutation
- Angelici
- Angelico, Fra
- angels in art
- Angels of the Churches
- angelus bell
- Angelus, The
- Angelus
- anger
- Angers, University of, France
- Anglesey, Henry Paget, 1st Marquess of
- Anglican Church, disestablishment of the
- Anglican Councils
- Anglican
- Anglin, Timothy Warren
- Anglo-Catholics
- Anglo-Saxon Church
- angustia loci
- Anima Christi, sanctifica me
- animals in Christian art
- animals, worship of
- animism
- anise
- Anna
- Annals of the Four Masters
- annals
- Annas
- annates
- Anne Catherine Emmerich
- Anne Hanson Dorsey
- Anne of Denmark
- annex chapel
- annihilation
- Annihilationism
- anniversary
- Annotinum Pascha
- Annuaire pontifical catholique
- annulment
- Annunciation of the Blessed Virgin Mary
- Annunziata, Order of the
- anoint
- ansata, crux
- Anselmo Baggio
- Anstey, Thomas Chisholm
- ant.
- antecedent grace
- antediluvians
- antependium
- Anthony van Dyck
- Anthony, Sister
- Anthoon van Dyck
- anthropology
- anthropomorphism
- anti-
- anti-paedobaptists
- anti-Semitism
- Antibes Legion
- antichrist
- anticipate
- Antidicomarianites
- antidoron
- Antigua
- Antimasonic Party
- Antimasons
- antimensium
- Antinomianism
- Antinomies
- Antinomy
- Antioch, Pisidia
- Antioch, School of
- Antioch, Syria
- Antioch
- Antiochene Rite
- Antipasch
- antiphon
- antiphonary
- antiphone, communion
- antipodes
- antipope
- Antitrinitarians
- antitype
- Antoine de la Mothe Cadillac
- Antoinette, Marie
- Antonelli, Giacomo
- Antonians
- Antonio Allegri Correggio
- Antonio Canova
- Antonio Escobar y Mendoza
- Antonio Espejo
- Antra deserti, teneris sub annis
- Antwerp Bible
- Antwerp
- Anvers
- anvil
- ape-men
- Apiarius of Sicca
- Apocalypse
- apocalyptic candlestick
- apocalyptic number
- apocatastasis
- Apocreos
|
- apocrypha
- Apodeipnon
- Apodosis
- Apollinarianism
- Apollo
- Apollyon
- apologetics
- apologia
- apologist, Christian
- Apolusia
- Apolysis
- Apolytikion
- Apophthegmata Patrum
- apostasy
- Apostle in Liturgy
- Apostle spoons
- Apostles of Erin, The Twelve
- Apostles other than the Twelve
- Apostles' Creed
- Apostles
- Apostleship of Prayer
- Apostolic Blessing
- Apostolic Camera
- Apostolic Canons
- Apostolic Chancery
- Apostolic Church Ordinance
- Apostolic churches
- Apostolic Constitutions
- Apostolic Dataria
- Apostolic delegate
- apostolic examiners
- apostolic expeditors
- Apostolic Indulgences
- Apostolic King
- Apostolic Letters
- Apostolic Mission House
- Apostolic schools
- Apostolic See
- Apostolic Signatura
- Apostolic Succession
- Apostolic Union of Secular Priests
- Apostolic, administration
- Apostolic, College
- Apostolicae Sedis Gratia
- Apostolici
- Apostolicity
- Apostolics
- apotheosis
- apparition of Our Saviour
- apparition of the Infant Jesus
- apparitions
- apparitor
- appeal
- Appellant Controversy
- appetite
- Appian Way
- apple of Cain
- apple of Cain
- apple of Sodom
- apple of Sodom
- apple, Adam's
- apple, Adam's
- apple, Dead Sea
- apple, Dead Sea
- apple
- approbation
- appropriation
- Apries
- Apronianus, Cemetery of
- apse chapel
- apse
- apsidiole
- aquamanile
- Aquarians
- Aquila and Priscilla
- Aquileia
- Aquileian Rite
- Arabia
- Aragon
- Aramaic
- Aran, Monastic school of
- Arbroath
- Arbuthnott Missal
- Arbutus unedo
- Arbutus unedo
- arca
- Arcadelt, Jacob
- arch-
- arch
- archabbot
- Archaeology, Christian
- Archaeology, Commission of Sacred
- archangel
- archbishop
- Archchancellor of the Empire
- archchaplain
- Archconfraternity of Christian Mothers
- archconfraternity
- archdeacon
- archdiocese
- Arches, Court of
- Archiep.
- archiepiscopal cross
- archiereus
- archimandrite
- archiparaphonista
- architecture, Byzantine
- architecture, ecclesiastical
- architrave
- Archives of the Holy See
- archives, diocesan
- Archives, Vatican
- archpresbytery
- Archpriest Controversy
- archpriest
- arcosolium
- Arcturus
- arculre
- Ardagh Chalice
- Ardchattan, prioy of
- Ardente, Chambre
- ardente, chapelle
- area
- Areopagite
- Areopagitica
- Areopagus
- Argenson, Pierre de Voyer, Viscount D'
- Argenteuil
- Argentina
- argia
- Arianism ce
- Arianism ncd
- Ariel
- Arimathea
- Aristides
- Aristotle
- Arius
- Arizona
- Ark and Dove
- Ark of the Covenant item
- Ark of the Covenant person
- ark
- Arkansas
- Arkwright, Sir Richard
- Arma Christi
- Armada, The Spanish
- Armagedon
- Armagh, Book of
- Armagh, School of
- Armenia, Socialist Soviet Republic of
- Armenian College
- Armenian Rite
- Arminianism
- armor
- army bishop
- Arnold of Brescia
- Arnoudt, Peter Joseph
- Arphaxad
- arrow
- art, Byzantine
- art, Christian
- Arthur, King
- articulo mortis
- Artoklasia
- Arundell, Henry
- Arundell, Humphry
- Arundell, Thomas 1560
- Arundell, Thomas 1584
- ascendancy
- Ascension
- Ascent of the Scorpion
- asceteby
- asceterion
- ascetical theology
- asceticism
- aseity
- Aser
- ash color, vestments of
- Ash Wednesday
- Asher
- ashes, blessed
- Ashmedai
- Ashtoret
- Asia Minor
- Asia, Proconsular
- Asmodeus
- asp
- asperges
- aspergill
- aspirations
- Asquith, Herbert Henry
- Ass in Caricature of Christian Beliefs and Practices
- ass worship
- ass
- Assam, British India, Prefecture Apostolic of
- Assemblies of God
- Assemblies of the French Clergy
- Asses, Feast of
- Assideans
- assistance of the Holy Ghost
- Assistant at the Pontifical Throne
- Association Catholique de la Jeunesse Francaise
- Association for the Protection of Belgian and Dutch Immigrants
- Association for Venerating the Martyrs in the Catacombs
- Association of Pentecostal Churches of America
- Association, Catholic Educational
- Association, Catholic
- Associations Cultuelles
- Associations Law
- Assuerus
- Assumption Abbey
- Assumption College
- Assumption of the Blessed Virgin Mary
- Assumptionists
- Assyria
- Assyrian Captivity
- Assyrian Rite
- Astaroth
- Astarte
- asterisk
- astrology
- astronomer
- astronomy
- asylum
- At The Lamb's High Feast We Sing
- Ateneo of Manila
- Athalie
- Athanasian Creed
- atheism
- Athelney, Abbey of
- Athenagoras
- Athenry, Galway, Ireland
- Athleta Christi nobilis
- athlete, Christian
- Athos, Mount
- Atonement, Day of
- atonement
- atrium
- attention
- Attila
- Attiret, Jean Denis
- attributes, divine
- attrition
- Aubrey Thomas Hunt De Vere
- Auctor beate saeculi
- Audi benigne Conditor
- Audiences, Papal
- audientes
- Audit tyrannus anxius
- auditor
- Audley, Edmund
- aufklarung
- Augouard, Philippe Prosper
- Augsburg, Germany
- Augsburg, Religious Peace of
- augurs
- Augusta Theodosia Drane
- Auguste Theodore Paul Broglie
- Augustin De Backer
- Augustin Magloire Blanchet
- Augustine Calmet
- Augustinian Canons
- Augustinians of the Assumption
- Augustinians
- Augustinism
- Augustus, Caius Julius Caesar Octavianus
- Aulneau, Jean Pierre
- aumbry
- aureole of the saints
- aureole
- auricular confession
- Auriesville, New York
- Auriesville
- Aurora caelum purapurat
- Aurora jam spargit polum
- Aurora soli praevia
- Austen, Jane
- austerities
- Austin Canons
- Austin Friars
- Australasia
- Australia
- Australian Catholic Truth Society
- Austria
- authentic
- authenticity
- Author and Finisher of Faith
- Author of Life, The
- authority
- Authorized Version
- auto-da-fé
- autocephali
- autos sacramentales
- Autricum
- Autun, Inscription of
- Auxerre, France
- Auxerre
- auxiliary bishop
- Auxilium Christianorum
- Avalon
- avarice
- Ave Maria Stella
- Ave Maria english publication
- Ave Maria slovenian publication
- Ave Maria term
- Ave Regina Caelorum
- Ave verum Corpus natum
- Avellana
- Averroes
- aversion
- Avesta
- aviators
- Avignon
- Avila, University of
- Aviz, Military Order of
- Avranches
- awl
- ax
- axinomancy
- Ayllon, Lucas Vasquez de
- Ayr, Scotland
- Ayscough, John
- Azarias, Brother
- Azevedo, Luiz de
- Aziz, Abdul
- azure vestments
- Azymes, Feast of
- azymes
- Azymites
|