Catholic Dictionary
Find accurate definitions of over 5,000 Catholic terms and phrases (including abbreviations). Based on Fr. John Hardon's Modern Catholic Dictionary, © Eternal Life. Used with permission.
Browsing by the letter 'I'
- I
- I.C.
- I.H.S.
- I.N.R.I.
- I.P.I.
- ICHABOD
- ICHTHUS
- ICON
- ICONOCLASM
- ICONOGRAPHY
- ICONOSTASIS
- ICXC NIKA
- ID
- IDEA
- IDEAL
- IDEALISM
- IDENTITY
- IDENTITY CRISIS
- IDEOLOGY
- IDIORRHYTHMIC
- IDLENESS
- IDOL
- IDOLATRY
- IESOUS HEMETEROS SOTER
- IESUS HOMINUM SALVATOR
- IESUS NAZARENUS REX IUDAEORUM
- IGNORANCE
- IGNORANCE OF FACT
- IGNORANCE OF LAW
- IGNORANTIA JURIS
- IGR
- IL SASSO
- ILLEGITIMACY
- ILLICIT
- ILLUMINATI
- ILLUMINATING GRACE
- ILLUMINATION
- ILLUMINATIVE WAY
- ILLUMINISM
- ILLUSION
- IMAGE
- IMAGES, VEILING OF
- IMAGES, VENERATION OF
- IMAGINATION
- IMAGINATIVE VISION
- IMITATION
- IMITATION OF CHRIST
- IMITATION OF SAINTS
- IMMACULATE CONCEPTION
- IMMACULATE CONCEPTION, SCAPULAR
- IMMACULATE HEART
- IMMACULATE HEART OF MARY, SCAPULAR
- IMMANENCE
- IMMANENT THEISM
- IMMANENTIST APOLOGETICS
- IMMATERIAL
- IMMENSITY
- IMMERSION
- IMMODEST LOOKS
- IMMOLATION
- IMMORAL
- IMMORALISM
- IMMORTALITY
- IMMOVABLE MOVER
- IMMUNITY
- IMMURATION
- IMMUTABILITY IN CREATURES
- IMMUTABILITY OF GOD
- IMPANATION
- IMPASSIBILITY
- IMPASSIBILITY, ORIGINAL
- IMPECCABILITY OF CHRIST
- IMPEDIENT IMPEDIMENT
- IMPEDIMENT
- IMPENDING DEATH
- IMPENETRABILITY
- IMPENITENCE, FINAL
- IMPERFECT CONTRITION
- IMPERFECT DIVORCE
- IMPERFECTION, NEGATIVE
- IMPERFECTION, POSITIVE
- IMPERIUM
- IMPETRATION
- IMPOSITION OF HANDS
- IMPOTENCE
- IMPRECATORY PSALMS
- IMPRIMATUR
- IMPRIMI POTEST
- IMPRUDENCE
- IMPULSE
- IMPURE DESIRES
- IMPURE THOUGHTS
- IMPURITY
- IMPUTABILITY
- IMPUTATION
- IMPUTED JUSTICE
- IN ARTICULO MORTIS
- IN COMMENDAM
- IN EXTREMIS
- IN FIERI
- IN FLAGRANTE DELICTO
- IN GLOBO
- IN HOC SIGNO
- IN LOCO PARENTIS
- IN MEMORIAM
- IN PARTIBUS INFIDELIUM
- IN PETTO
- IN SAECULA SAECULORUM
- IN SE
- IN SYNODO EPISCOPALI
- IN THE YEAR OF THE (OUR) LORD
- INALIENABLE RIGHTS
- INCARDINATION
- INCARNATION
- INCARNATIONAL
- INCENSE
- INCENSE BOAT
- INCENTIVE
- INCEST
- INCOMMUNICABLE ATTRIBUTE
- INCOMPREHENSIBLE
- INCONTINENCE
- INCORRUPTIBILITY
- INCREASE OF MERIT
- INCULPABLE
- INCUMBENT
- IND
- IND
- INDEFECTIBILITY
- INDEPENDENCE
- INDETERMINISM
- INDEX EXPURGATORIUS
- INDEX OF FORBIDDEN BOOKS
- INDICTION
- INDIFFERENCE
- INDIFFERENT ACT
- INDIFFERENTISM
- INDIRECT SUICIDE
- INDIRECT TEMPORAL JURISDICTION
- INDIRECT VOLUNTARY
- INDISSOLUBILITY
- INDISSOLUBLE MARRIAGE
- INDIVIDUAL
- INDIVIDUALISM
- INDIVIDUALITY
- INDIVIDUATION
- INDOLENCE
- INDUCTION
- INDULGENCE
- INDULGENTIARUM DOCTRINA
- INDULT
- INDWELLING
- INEFFABLE
- INEFFICACIOUS GRACES
- INERRANCY
- INFALLIBILITY
- INFALLIBILITY, EPISCOPAL
- INFALLIBLE BOOK
- INFAMY
- INFANCY
- INFANT BAPTISM
- INFANTICIDE
- INFANTS
- INFANTS, ANOINTING OF
- INFANTS, EUCHARIST TO
- INFANTS, UNBAPTIZED
- INFERENCE
- INFIDEL
- INFIDELITY
- INFIDELITY, MARITAL
- INFINITE
- INFINITY OF GOD
- INFIRMUS CUM ECCLESIA
- INFUSED CONTEMPLATION
- INFUSED HABIT
- INFUSED KNOWLEDGE
- INFUSED SCIENCE
- INFUSED VIRTUE
- INFUSION
- INHERENCE
- INHERITANCE
- INHIBITING IMPEDIMENT
- INHIBITIVE FEAR
- INITIATION OF ADULTS
- INJURIOUS WORDS
- INJUSTICE
- INNATE HABIT
- INNATE IDEAS
- INNOCENCE
- INQ
- INQUISITION
- INSANITY
- INSCRIPTIONS
- INSIGHT
- INSIGNIA
- INSPIRATION, BIBLICAL
- INSPIRING GRACE
- INSTALLATION
- INSTINCT
- INSTITUTE, CLERICAL
- INSTITUTE, DIOCESAN
- INSTITUTE, EXEMPT
- INSTITUTE, LAY
- INSTITUTE, PONTIFICAL
- INSTITUTE, RELIGIOUS
- INSTITUTION
- INSTITUTIONAL REVOLUTION
- INSTRUCTION
- INSTRUCTION, PAPAL
- INSTRUCTION, PARENTAL
- INSTRUMENTAL CAUSE
- INSTRUMENTALISM
- INTEGRATED PERSONALITY
- INTEGRITY
- INTEGRITY OF CONFESSION
- INTELLECT
- INTELLECTUAL MIRACLE
- INTELLECTUAL VIRTUES
- INTELLECTUAL VISION
- INTELLECTUALISM
- INTELLIGENCE
- INTENTION
- INTER EA
- INTER MIRIFICA
- INTER OECUMENICI
- INTER PARES
- INTERCESSION
- INTERCOMMUNION
- INTERCOMMUNION, EUCHARISTIC
- INTERDATE
- INTERDICT
- INTERIOR STRUGGLE
- INTERIORIZATION
- INTERNAL GRACE
- INTERNAL PEACE
- INTERNAL SINS
- INTERNATIONAL CATHOLIC ORGANIZATIONS (ICO)
- INTERNUNCIO
- INTERPRETATION
- INTERPRETATIVE INTENTION
- INTERREGNUM
- INTERSTICES
- INTINCTION
- INTOLERANCE
- INTRINSIC
- INTRINSIC GOODNESS
- INTRINSICALLY EVIL
- INTROIT
- INTROSPECTION
- INTROVERSION
- INTUITION
- INTUITIONISM
- INVALID
- INVESTITURE
- INVESTITURE, LAY
- INVINCIBLE IGNORANCE
- INVIOLABILITY OF LAW
- INVOCATION
- INVOCATION OF SAINTS
- INVOLUNTARY
- IPSO FACTO
- IPSUM ESSE
- IRASCIBLE APPETITE
- IRREGULARITY
- IRREMOVABILITY
- IS
- ISAAC
- ISAIAH
- ISHBAAL
- ISHBOSHETH
- ISMAEL
- ISRAEL
- ISSACHAR
- ITALA
- ITE, MISSA EST
- ITHAI
- ITINERARIUM
- ITTAI or ITHAI
- IVIRON, OUR LADY OF (shrine)
