Is “Hydrothermal” a Scrabble word?
Yes
HYDROTHERMAL
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Hydrothermal
adjective
1.Of, or relating to hot water.
2.Of or relating to emanations of hot water that are rich in minerals, or to the rocks formed from them.