Is “Macrons” a Scrabble word?
Yes
MACRONS
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 Macrons
/ˈmeɪˌkɹɒnz/
noun
1.A short, straight, horizontal diacritical mark (¯) placed over any of various letters, usually to indicate that the pronunciation of a vowel is long.