9 letters · 16 points in Scrabble
noun abnormal adhesion and rigidity of the bones of a joint
originFrom Ancient Greek ἀγκύλωσις (ankúlōsis, “a stiffening of the joints”), from ἀγκυλόω (ankulóō, “to crook, bend”), from ἀγκύλος (ankúlos, “bent, crooked”). By surface analysis, ankyl- + -osis.
Etymology from Wiktionary, CC BY-SA 3.0