Here's what rhymes with polychromous.
sarcomas dichotomous Words that almost rhyme with polychromous
lowness coronas bonus slowness gliomas aromas comas diplomas lymphomas donas kimonos carcinomas granulomas cacophonous hematomas locus lotus loess crocus cloacas focus notice homeless bogus bolus foetus modus polis poetess ptosis bolas colas togas roebucks goalless moments poets hopeless necrosis sclerosis atrocious cirrhosis ferocious hostess neurosis rodents locusts meiosis precocious embolus poultice soulless boneless cupolas grownups refocus kopeks toneless hotness blowups foments drollness prognosis fibrosis boldness coldness encroachments hypnosis psychosis arteriosus enrollments mitosis remoteness scoliosis doughnuts nobleness proneness enrolments quotients smokeless donuts gladiolus holdups docents elopements cosmoses diagnosis thrombosis acidosis cyanosis symbiosis amyloidosis condolence sarcoidosis halitosis weaponless snowbanks sobriquets pianolas violists enthronements opponents apoptosis exponents apotheosis aponeurosis leukocytosis psychoneurosis chiropodists components proponents phagocytosis arteriosclerosis mononucleosis misdiagnosis deponents honeylocusts erythematosus hydronephrosis metempsychosis postponements cosmogonists