c. 1400, "belonging to (religious) ritual," also as a noun, "a ceremonial practice," from Late Latin caerimonialis "pertaining to ceremony," from caerimonia (see ceremony). Related: Ceremonially.
Ceremonial means connected with or constituting or consisting of or fit for a ceremony (i.e. a piece of ritual or formality) or ceremonies .... Ceremonious means full of or resulting from ceremony i.e. attention to forms .... [Fowler]
type of bread, usually braided, typically eaten on Jewish ceremonial occasions, 1887, from Yiddish khale, from Hebrew chala, which is possibly from hll "hollow, pierce," and perhaps is a reference to the original appearance of it.
"one who conducts a religious service, one who administers a sacrament," 1836, from noun use of Medieval Latin officiantem (nominative officians) "performing religious services," present participle of officiare "to perform religious services," from Latin officium "a service; an official duty; ceremonial observance" (in Medieval Latin, "church service"); see office.
late 14c., recepcion, in astrology, "the effect of two planets on each other;" late 15c. in the general sense of "the act or fact of getting or receiving; the receiving of something in the manner of a receptacle;" from Old French reception and directly from Latin receptionem (nominative receptio) "a receiving," noun of action from past-participle stem of recipere "to hold, contain" (see receive).
The sense of "action of receiving (persons) or of being received in a formal or ceremonial manner" is from 1660s; earlier it meant act or fact of being received into a company, class, etc., or in a certain manner (1640s). The meaning "ceremonial gathering of persons to be received or greeted" is by 1865, from a sense in French. Radio (later television) sense of "the receiving of broadcast signals" is by 1907. Reception room, set aside for the reception of visitors, is by 1829.
mid-14c., pollucioun, "discharge of semen other than during sex," later, "desecration, profanation, defilement, legal or ceremonial uncleanness" (late 14c.), from Late Latin pollutionem (nominative pollutio) "defilement," noun of action from past-participle stem of Latin polluere "to soil, defile, contaminate," probably from *por- "before" (a variation of pro "before, for;" see pro-) + -luere "smear," from PIE root *leu- "dirt; make dirty" (see lutose). Sense of "contamination of the environment" is recorded from c. 1860, but not common until c. 1955.
mid-14c., "leave or permission to depart," from Old French conget, congié "permission, leave of absence, dismissal, ceremonial leave-taking" (Modern French congé), from Medieval Latin commeatus "leave, permission to depart," in classical Latin "passage, going to and fro," hence "leave of absence," from commeare, from com "with, together" (see com-) + meare "to go, pass" (from PIE root *mei- (1) "to change, go, move"). Probably lost 17c. and revived 19c. from Modern French as congé. Also as a verb.
late 14c., "performing a service" (a sense now obsolete); c. 1400, "required by duty," from Old French oficial "official; main, principal" (14c., Modern French officiel) and directly from Late Latin officialis "of or belonging to duty, service, or office," from Latin officium "service, kindness, favor; official duty, function, business; ceremonial observance," literally "work-doing," from ops (genitive opis) "power, might, abundance, means" (related to opus "work," from PIE root *op- "to work, produce in abundance") + combining form of facere "to make, to do" (from PIE root *dhe- "to set, put").
Meaning "pertaining to an office or official position" is from c. 1600. That of "derived from the proper office or officer," hence "authorized," is by 1854.