Is “Heptads” a Scrabble word?
Yes
HEPTADS
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 Heptads
noun
1.A group of seven things.
2.A sequence of seven bases.