logic A declaration of something self-evident; something that can be assumed as the basis for argument.

synonym: postulation.

Roget 998: rite; ceremony, ritual, liturgy, ceremonial; ordinance, observance, function, duty; form, formulary; solemnity, sacrament; incantation etc. (spell) 993; service, psalmody etc. (worship) 990.    ministration; preaching, preachment; predication, sermon, homily, lecture, discourse, pastoral.    [Christian ritual for induction into the faith] baptism, christening, chrism; circumcision; baptismal regeneration; font.    confirmation; imposition of hands, laying on of hands; ordination etc. (churchdom) 995; excommunication.    [Jewish rituals] Bar Mitzvah, Bas Mitzvah [Fr.], Bris.    Eucharist, Lord's supper, communion; the sacrament, the holy sacrament; celebration, high celebration; missa cantata [Lat.]; asperges^†; offertory; introit; consecration; consubstantiation, transubstantiation; real presence; elements; mass; high mass, low mass, dry mass.    matrimony etc. 903; burial etc. 363; visitation of the sick.    seven sacraments, impanation^†, subpanation^†, extreme unction, viaticum, invocation of saints, canonization, transfiguration, auricular confession; maceration, flagellation, sackcloth and ashes; penance etc. (atonement) 952; telling of beads, processional; thurification^†, incense, holy water, aspersion.    relics, rosary, beads, reliquary, host, cross, rood, crucifix, pax [Lat.], pyx, agnus Dei [Lat.], censer, thurible, patera^†; eileton^†, Holy Grail; prayer machine, prayer wheel; Sangraal^†, urceus^†.    ritualism, ceremonialism; sabbatism^†, sabbatarianism^†; ritualist, sabbatarian^†.    holyday, feast, fast.    [Christian holy days] Sabbath, Pentecost; Advent, Christmas, Epiphany; Lent; Passion week, Holy week; Easter, Easter Sunday, Whitsuntide; agape, Ascension Day, Candlemas^†, Ash Wednesday, Good Friday, Holy Thursday; Lammas, Martinmas, Michaelmas; All SAint's DAy, All Souls' Day.    [Moslem holy days] Ramadan, Ramazan; Bairam &c.. etc. [Jewish holy days] Passover; Shabuoth; Yom Kippur, Day of Atonement; Rosh Hashana, New Year; Hanukkah, Chanukkah, Feast of Lights; Purim, Feast of lots.    ... show more

Roget 535: affirmance, affirmation; statement, allegation, assertion, predication, declaration, word, averment; confirmation.    asseveration, adjuration, swearing, oath, affidavit; deposition etc. (record) 551; avouchment; assurance; protest, protestation; profession; acknowledgment etc. (assent) 488; legal pledge, pronouncement; solemn averment, solemn avowal, solemn declaration.    remark, observation; position etc. (proposition) 514, saying, dictum, sentence, ipse dixit [Lat.].    emphasis; weight; dogmatism etc. (certainty) 474; dogmatics etc. 887.    ... show more