POLYHEDRON

Yes, POLYHEDRON is a Scrabble word!

Letter values in Scrabble US: P 3, O 1, L 1, Y 4, H 4, E 1, D 2, R 1, O 1, N 1.P 3 · O 1 · L 1 · Y 4 · H 4 · E 1 · D 2 · R 1 · O 1 · N 1

Is it a valid word?

• Scrabble US: valid, 19 points.Scrabble USYour dictionary · Change (go to the dictionary switch)Valid · 19 points
• Scrabble UK: valid, 19 points. Make Scrabble UK your dictionary.Scrabble UKYour dictionary · ChangeValid · 19 points
• Words with Friends: valid, 20 points. Make Words with Friends your dictionary.Words with FriendsYour dictionary · ChangeValid · 20 points