Is “Altissimo” a Scrabble word?
Yes
ALTISSIMO
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 Altissimo
noun
1.The highest register of a woodwind instrument, or a specific note in this register