Is “Ptyalin” a Scrabble word?
Yes
PTYALIN
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 Ptyalin
noun
1.A form of amylase found in saliva that breaks down starch into maltose and dextrin.