phlebosclerosis

noun
phle·​bo·​scle·​ro·​sis | \ ˌflē-bō-sklə-ˈrō-səs How to pronounce phlebosclerosis (audio) \
plural phleboscleroses\ -​ˌsēz How to pronounce phleboscleroses (audio) \

Medical Definition of phlebosclerosis

: sclerosis of the wall of a vein and especially of its inner coats

called also venofibrosis