Fresenius rhymes with:
cyrenius, homogeneous, acrimonious, aeneas, aerolineas, antonius, bournias, contemporaneous, cyrenius, erroneous, extraneous, felonious, harmonious, homogeneous, igneous, ignominious, instantaneous, miscellaneous, morphonios, palonius, parsimonious, percutaneous, phineas, plinius, sanctimonious, simultaneous, spontaneous, thelonius, unceremonious, vilnius
Fresenius sounds like:
farrakhan's, ferguson's, firesign's, firkins, foraging, forcing, foregoing, foreseeing, forging, forgings, forgoing, forking, forsaking, freaking, freezing, frequencies, frequency, frerking, freshening, freshens, freshness, fresno's