Is “Hegemon” a Scrabble word?
Yes
HEGEMON
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 Hegemon
/ˈhɛ.dʒɛ.mən/
noun
1.A dominating leader or force, especially that which dominates a separate political entity; a hegemonist.