Maundy ThursdayMaundy Thursday or Holy Thursday (also known as Great and Holy Thursday, Holy and Great Thursday, Covenant Thursday, Sheer Thursday, and Thursday of Mysteries, among other names) is the day during Holy Week that commemorates the Washing of the Feet (Maundy) and Last Supper of Jesus Christ with the Apostles, as described in the canonical gospels. It is the fifth day of Holy Week, preceded by Holy Wednesday and followed by Good Friday. "Maundy" comes from the Latin word mandatum, or commandment, reflecting Jesus' words "I give you a new commandment.
Liturgical yearThe liturgical year, also called the church year, Christian year or kalendar, consists of the cycle of liturgical seasons in Christian churches that determines when feast days, including celebrations of saints, are to be observed, and which portions of Scripture are to be read either in an annual cycle or in a cycle of several years. Distinct liturgical colours may be used in connection with different seasons of the liturgical year. The dates of the festivals vary somewhat among the different churches, although the sequence and logic is largely the same.
Octave (liturgy)"Octave" has two senses in Christian liturgical usage. In the first sense, it is the eighth day after a feast, reckoning inclusively, and so always falls on the same day of the week as the feast itself. The word is derived from Latin octava (eighth), with dies (day) understood. In the second sense, the term is applied to the whole period of these eight days, during which certain major feasts came to be observed.
SanctusThe Sanctus (Sanctus, "Holy") is a hymn in Christian liturgy. It may also be called the epinikios hymnos (ἐπινίκιος ὕμνος, "Hymn of Victory") when referring to the Greek rendition and parts of it are sometimes called "Benedictus". Tersanctus (Latin: "Thrice Holy") is another, rarer name for the Sanctus. The same name is sometimes used for the Trisagion. In Western Christianity, the Sanctus forms part of the Ordinary and is sung (or said) as the final words of the Preface of the Eucharistic Prayer of remembrance, consecration, and praise.
EastertideEastertide (also known as Eastertime or the Easter season) or Paschaltide (also known as Paschaltime or the Paschal season) is a festal season in the liturgical year of Christianity that focuses on celebrating the Resurrection of Jesus Christ. Preceded by Lent, it begins on Easter Sunday, which initiates Easter Week in Western Christianity, and Bright Week in Eastern Christianity.
PsalterA psalter is a volume containing the Book of Psalms, often with other devotional material bound in as well, such as a liturgical calendar and litany of the Saints. Until the emergence of the book of hours in the Late Middle Ages, psalters were the books most widely owned by wealthy lay persons. They were commonly used for learning to read. Many Psalters were richly illuminated, and they include some of the most spectacular surviving examples of medieval book art. The English term (Old English psaltere, saltere) derives from Church Latin.
Book of hoursBooks of hours (horae) are Christian prayer books which were used to pray the canonical hours. The use of a book of hours was especially popular in the Middle Ages and as a result, they are the most common type of surviving medieval illuminated manuscript. Like every manuscript, each manuscript book of hours is unique in one way or another, but most contain a similar collection of texts, prayers and psalms, often with appropriate decorations, for Christian devotion.
AgpeyaThe Agpeya (Coptic: Ϯⲁⲅⲡⲓⲁ, أجبية) is the Coptic Christian "Prayer Book of the Hours" or breviary, and is equivalent to the Shehimo in the Syriac Orthodox Church (another Oriental Orthodox Christian denomination), as well as the Byzantine Horologion and Roman Liturgy of the Hours used by the Eastern Orthodox Churches and Roman Catholic Church, respectively.
PlainsongPlainsong or plainchant (calque from the French plain-chant; cantus planus) is a body of chants used in the liturgies of the Western Church. When referring to the term plainsong, it is those sacred pieces that are composed in Latin text. Plainsong was the exclusive form of Christian church music until the ninth century, and the introduction of polyphony. The monophonic chants of plainsong have a non-metric rhythm. Their rhythms are generally freer than the metered rhythm of later Western music, and they are sung without musical accompaniment.
Roman MissalThe Roman Missal (Missale Romanum) is the title of several missals used in the celebration of the Roman Rite. Along with other liturgical books of the Roman Rite, the Roman Missal contains the texts and rubrics for the celebration of the most common liturgy and Mass of the Catholic Church. Before the high Middle Ages, several books were used at Mass: a Sacramentary with the prayers, one or more books for the Scriptural readings, and one or more books for the antiphons and other chants.
