paten

[pat-n] /ˈpæt n/
noun
1.
a metal plate on which the bread is placed in the celebration of the Eucharist.
Also, patin.
Origin
1250-1300; Middle English pateyn(e) < Old French patene < Medieval Latin patena, patina Eucharistic plate (Latin: pan); akin to Greek patánē flat dish, Latin patēre to be open (see patent)
British Dictionary definitions for paten

paten

/ˈpætən/
noun
1.
a plate, usually made of silver or gold, esp the plate on which the bread is placed in the Eucharist
Word Origin
C13: from Old French patene, from Medieval Latin, from Latin patina pan
Word Origin and History for paten
n.

"plate for bread at Eucharist," c.1300, from Old French patene and directly, from Medieval Latin patena, from Latin patina "pan, dish" (see pan (n.)).