Definition of "officiation" [officiation]

• The performance of any act or ceremony by the proper officers; also, the time or term during which this performance continues. (noun)

The Century Dictionary (Public Domain)

• "But officiation aside, what would the Clinton-Mezvinsky wedding look like if the couple chose to incorporate elements of Jewish tradition?"
• "In the Jewish community, controversy surrounds rabbinic officiation at weddings for interfaith couples: Not all denominations of Judaism permit their rabbis to do so, and some rabbis who are permitted still choose not to."
• "Recent decades have brought many advancements for the GLBT Jewish community: the establishment of GLBT synagogues, gay/lesbian haggadahs, the ordination of gay/lesbian rabbis, rabbinic officiation at GLBT commitment ceremonies, and much ritual and liturgical innovation."