transitive. To perform or observe (a ceremony, rite, etc.). Now rare and chiefly Freemasonry (cf. sense 1c(b)).

transitive. To be a servant of (a god or gods) in a formal or official capacity; spec. to officiate in formal worship of.

transitive. To celebrate, keep, or observe (a religious rite); spec. to partake of or receive (the Eucharist). Now rare (chiefly historical).

transitive. To dignify or honour by ceremonies; to celebrate or commemorate by special observances or with special formality.

To carry on, carry out, perform. To celebrate, perform (a ceremony, religious service, etc.); to perform the observances of (a religion). Obsolete.

transitive. To perform or celebrate duly or in a prescribed manner (a rite, ceremony, etc.); to mark or acknowledge (a festival, anniversary…

to solemnize, to perform.

intransitive. = officiate, v. 2b.

intransitive. To perform divine service; = officiate, v. 2. Obsolete.

spec. To perform, celebrate (ceremonies, religious service). Obsolete.

transitive. To solemnize, celebrate.

transitive. To perform publicly (a religious or formal ceremony, such as a marriage or funeral); to solemnize; spec. to officiate at (the Eucharist)…

transitive. To solemnize.

To celebrate (a sacrament, etc.); to honour with observances. Cf. French fréquenter. Obsolete.

transitive. To offer (a prayer, esp. a petition for help) to God or a god; to make (a plea) to a person.

transitive. To perform, celebrate (a religious service or rite); to execute, exercise (a spiritual charge or function).

transitive. To sanctify or treat with ceremony.

transitive, to conduct by means of the Liturgy.