HETEROCYST

Yes, HETEROCYST is a Scrabble word!

Letter values in Scrabble US: H 4, E 1, T 1, E 1, R 1, O 1, C 3, Y 4, S 1, T 1.H 4 · E 1 · T 1 · E 1 · R 1 · O 1 · C 3 · Y 4 · S 1 · T 1

Is it a valid word?

• Scrabble US: valid, 18 points.Scrabble USYour dictionary · Change (go to the dictionary switch)Valid · 18 points
• Scrabble UK: valid, 18 points. Make Scrabble UK your dictionary.Scrabble UKYour dictionary · ChangeValid · 18 points
• Words with Friends: valid, 17 points. Make Words with Friends your dictionary.Words with FriendsYour dictionary · ChangeValid · 17 points