Definitions for "Communicants"
the members of a local church; those who do or who are eligible to receive communion; loosely identified with the roll of the local church: "St. Mark's has 300 communicants [=official members]." But, "There were 37 communicants at the Eucharist at the early service [=37 people received the Lord's Supper]."
Persons who take Holy Communion
those members of a church who are entitled to partake in Communion; often used to refer to church members in general.