Words That Rhyme With "Phototonus" :
3 syllables:
chitinous, glutenous, glutinous, gluttonous, mateyness, meatiness, mutinous, patinous, pettiness, platinous, prytanis, rottenness, wantonness
4 syllables:
annotinous, dichotomous, gelatinous, homogonous, hypotenuse, keratinous, monodomous, monostomous, monotonous, physostomous, schizogonous, serotinous, velutinous, xylotomous