The artophorion, literally "the box of the holy Communion," is a vessel made usually of silver, or thick glass in poor churches, it is circular in shape and has a lid measuring about 3 inches in diameter. Its height is about 1.5 inches.
It is called "Ciborium," or the Box of the holy Communion," enclosing the Holy Communion, to be given to the sick and prisoners.
Dictionary of church terms. — St. GEORGE'S COPTIC ORTHODOX CHURCH SPORTING - ALEXANDRIA EGYPT. Fr. Tadros Yacoub Maiaty.