Is “Photoionization” a Scrabble word?
Yes
PHOTOIONIZATION
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 Photoionization
noun
1.The ejection of electrons from an atom or other species following the absorption of photons.