early 15c., "pertaining to sclerosis," from medical Latin scleroticus, from Greek skleroun (see sclerosis). Figurative meaning "unchanging, rigid" is from 1961.
Entries linking to sclerotic
sclerosis n.
"a hardening," especially "morbid hardening of the tissue," late 14c., from Medieval Latin sclerosis "a hardness, hard tumor," from Greek sklērosis "hardening," from sklēros "hard" (see sclero-). Figurative use, "excessive resistance to change," is by 1954.