Photodynamic rhymes with:
aerodynamic, hemodynamic, psychodynamic, aerodynamic, dynamic, hemodynamic, psychodynamic, aerodynamic, dynamic, hemodynamic, psychodynamic
Photodynamic sounds like:
padding, pathans, patience, patons, patten's, patting, patton's, petitioning, petitions, pettiness, petting, petunias, photons, pittance, pitting, pitying, pivoting, podiums, podunk, potency, potenza, potions, potomac, pouting, ptomaines, pudding, puddings, pudong, put-ons, putdowns, putnam's, putting, puttnam's, python's