Here's what rhymes with prothyron.
siren Words that almost rhyme with prothyron
phylum xylem asylum fibrin fireman firemen heighten hyphen scion siphon hymen syphon horizon lion frighten tighten widen bison lichen lighten ripen beiden liken whiten liven thriven titan brighten baryon prion lineman linemen pinyon finespun veniremen funnyman enlighten enliven aphelion cotyledon linesman bedizen billycan perihelion dicotyledon dandelion monocotyledon