the act of participating in the celebration of the Eucharist
"the governor took Communion with the rest of the congregation"
(Christianity) a group of Christians with a common religious faith who practice the same rites
"The new congregation joined an existing communion that shares their traditional liturgical practices."
A joining together of minds or spirits.
"The two old friends sat in silence, finding a deep communion of minds despite their years apart."
In plain English: Communion is a close spiritual connection where people share their faith and feelings with each other, often through religious rituals or deep friendship.
"The children experienced a deep sense of communion with nature while walking through the forest."
Alternative letter-case form of communion (“Holy Communion”)
"The priest offered holy communion to the congregation during the mass."
The word "communion" comes from the Latin commūniō, which originally meant a sharing in common. It entered English through Middle English and French forms derived from this root.