P3H4O1T1O1I1O1N1I1Z10I1N1G2
28 points
PHOTOIONIZING is validvalid
PHOTOIONIZE, to ionize under the influence of light
PHOTOIONIZE, to ionize by electromagnetic radiation, also PHOTOIONISE
PHOTOIONIZE, to ionize under the influence of light
PHOTOIONIZE, to ionize by electromagnetic radiation, also PHOTOIONISE