Is “Counterflow” a Scrabble word?
Yes
COUNTERFLOW
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 Counterflow
noun
1.A flow in the opposite direction; or the flow of two fluids in opposite directions
verb
1.To flow in the opposite direction