Here's what rhymes with porphyran.
siren Words that almost rhyme with porphyran
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 billycan funnyman enlighten enliven aphelion linesman bedizen perihelion cotyledon dandelion dicotyledon monocotyledon