con·cel·e·brate [ kən séllə bràyt ](past and past participlecon·cel·e·brat·ed, present participlecon·cel·e·brat·ing, 3rd person present singularcon·cel·e·brates)
transitive and intransitive verb
Definition:
officiate jointly at Christian Mass: to celebrate the Christian Mass or Communion jointly with one or more other priests
[Late 16th century. < Latin concelebrat-, past participle of concelebrare "celebrate together" < celebrare (see celebrate)]