Is “Karat” a Scrabble word?
Yes
KARAT
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 Karat
/ˈkæɹ.ət/
noun
1.A unit of fineness or concentration of gold equalling 1/24 part of gold in an alloy.