phantogeusia

noun
phan·​to·​geu·​sia | \ ˌfan-tə-ˈgyü-zē-ə How to pronounce phantogeusia (audio) , -ˈjü- How to pronounce phantogeusia (audio) , -sē-\

Medical Definition of phantogeusia

: an often metallic or salty taste in the mouth for which no external stimulus can be found