Here's what rhymes with multiphoton.

Consider these alternatives

denitrification / situation ionization / information confocal / local dissociation / relation fluorescence / presence phosphorescence / presence biotransformation / information diamagnetism / given radiometers / gradiometers sonication / education nitrification / situation demineralization / relation lesioning / reasoning electrodeposition / position oligomerization / education excitation / operation neuropil / total volatilization / education flocculation / relation thermographic / traffic