Definify.com
Webster 1913 Edition
Patio
‖
Pa′ti-o
(pä′tē̍-ō̍)
, Noun.
[Sp., a court]
(Metal)
A paved yard or floor where ores are cleaned and sorted, or where ore, salt, mercury, etc., are trampled by horses, to effect intermixture and amalgamation.
☞ The patio process is used to reduce silver ores by amalgamation.