THERMIONIC

Yes, THERMIONIC is a Scrabble word!

Letter values in Scrabble US: T 1, H 4, E 1, R 1, M 3, I 1, O 1, N 1, I 1, C 3.T 1 · H 4 · E 1 · R 1 · M 3 · I 1 · O 1 · N 1 · I 1 · C 3

Is it a valid word?

• Scrabble US: valid, 17 points.Scrabble USYour dictionary · Change (go to the dictionary switch)Valid · 17 points
• Scrabble UK: valid, 17 points. Make Scrabble UK your dictionary.Scrabble UKYour dictionary · ChangeValid · 17 points
• Words with Friends: valid, 19 points. Make Words with Friends your dictionary.Words with FriendsYour dictionary · ChangeValid · 19 points