9 letters · 11 points in Scrabble
noun any pathological hardening or thickening of tissue
originFrom Ancient Greek σκλήρωσις (sklḗrōsis, “hardening”), from σκληρόω (sklēróō, “to harden”), from σκληρός (sklērós, “hard”); by surface analysis, sclero- + -osis.
Etymology from Wiktionary, CC BY-SA 3.0