Is “Synchronism” a Scrabble word?
Yes
SYNCHRONISM
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 Synchronism
noun
1.The state of being synchronous.
2.A temporal relationship between events.
3.The tabular arrangement of contemporary events etc. in history.
Synonyms: synchroneity, synchronicity