pat·en also pat·in 
(pătn)
(pătn)n.
1. A plate, usually of gold or silver, that is used to hold the host during the celebration of the Eucharist. Also called patina1.
2. A plate or shallow dish, especially an artifact from an ancient civilization.
3. A thin disk of or resembling metal.
[Middle English, from Old French patene, from Medieval Latin patina, from Latin, pan, from Greek patanē, platter; see petə- in the Appendix of Indo-European roots.]