[scle.rot.ic] adj (1543) 1: being or relating to the sclera
2: of, relating to, or affected with sclerosis
3: grown rigid or unresponsive esp. with age "~ institutions"
[2]sclerotic n [ML sclerotica, fr. (assumed) Gk sklerotos, verbal of Gk skleroun to harden] (1690): sclera