Defn: The officer who officiates or performs an office, as the burial office. Shipley.

OFFICIARY
Of*fi"ci*a*ry, a.

Defn: Of or pertaining to an office or an officer; official. [R.]
Heylin.

OFFICIATE
Of*fi"ci*ate, v. i. [imp. & p. p. Officiated; p. pr. & vb. n.
Officiating.] Etym: [LL. officiare. See Office.]

Defn: To act as an officer in performing a duty; to transact the business of an office or public trust; to conduct a public service. Bp. Stillingfleet.

OFFICIATE
Of*fi"ci*ate, v. t.

Defn: To discharge, perform, or supply, as an official duty or
function. [Obs.]
Merely to officiate light Round this opacous earth. Milton.

OFFICIATOR
Of*fi"ci*a`tor, n.

Defn: One who officiates. Tylor.

OFFICINAL Of*fic"i*nal, a. Etym: [F., fr. L. officina a workshop, contr.fr. opificina, fr. opifex a workman; opus work + facere to make or do.]