Gregorian
Chant from monasteries
Gregorian refers to things associated with Pope Gregory, most commonly the Gregorian calendar—the solar calendar introduced by Pope Gregory XIII in 1582, now the international standard.
Gregorian chant is the plainchant tradition of the Roman Catholic Church, named for Pope Gregory I.
The Gregorian calendar replaced the Julian calendar to correct the drift in Easter's date.
Unaccompanied liturgical melody
- monophonicHaving one voice
- liturgyFormal worship structure
- antiphonAlternating liturgical song
- gradualDeveloping slowly over time
sequence · trope · modal · introit · offertory · communion · vespers · compline
Relating to a famous Roman
- Anno DominiYears since Christ's birth
- BCPre-Christian year marker
- ADEra after BC
- leap yearCalendar with added day
epoch · millennium · centuries · reform · intercalation · equinox · solstice · Easter
Papal city-state
- reformImprove by correcting faults
- CatholicPapal church adherent
- papacyPope's office and authority
- pontificateSpeak in dogmatic manner
Holy See · decree · bull · encyclical · canonization · tiara · apostolic · Rome
Buying church positions
- investitureCeremony conferring rank
- celibacyAbstaining from intimate relations
- canon lawReligious institutional regulations
- clergyOrdained religious officials collectively
indulgence · schism · monasticism · Henry IV · excommunication · benefice · ecclesiastical · corruption
Light-redirecting surface
- mirrorReflective viewing surface
- opticsScience of illumination
- parabolicShaped like a conic section
- concaveCurving inward, not outward
focal point · aperture · eyepiece · Scottish · 17th century · design · astronomical
plainchant
Unaccompanied liturgical melody
- monophonicHaving one voice
- liturgyFormal worship structure
- antiphonAlternating liturgical song
gradual · sequence · trope · modal · introit · offertory · communion · vespers · compline · Mass
Julian
Relating to a famous Roman
- Anno DominiYears since Christ's birth
- BCPre-Christian year marker
- ADEra after BC
leap year · epoch · millennium · centuries · reform · intercalation · equinox · solstice · Easter · chronology
Vatican
Papal city-state
pontificate · Holy See · decree · bull · encyclical · canonization · tiara · apostolic · Rome · ecclesiastical
simony
Buying church positions
- investitureCeremony conferring rank
- celibacyAbstaining from intimate relations
- canon lawReligious institutional regulations
clergy · indulgence · schism · monasticism · Henry IV · excommunication · benefice · ecclesiastical · corruption · papacy
reflector
Light-redirecting surface
concave · focal point · aperture · eyepiece · Scottish · 17th century · design · astronomical
- calendarcalendar, date, day, week, month
- calendarscalendar, calendar day, calendar year, calendar month, lunar calendar
- time periodsday, year, month, week, hour
- telescopesrefractor, reflector, Newtonian, space telescope, radio telescope
- timesecond, minute, hour, day, seconds
- timekeepingclock, watch, watches, clocks, timer
GregorianJulian
Relating to a famous Roman
lunar calendar · Islamic calendar · Hebrew calendar · Chinese calendar · Hindu calendar
Gregorianpolyphonic
Having multiple melodic lines
harmonic · secular music · contemporary worship · instrumental · secular
- Gregorian chantsMedieval Catholic liturgical melodies
- Gregorian calendarCurrent global date system