Is “Spinthariscopes” a Scrabble word?
Yes
SPINTHARISCOPES
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 Spinthariscopes
noun
1.An early device for observing individual nuclear disintegrations.