gibbous / gibbus [ˈʤɪbəs]
gibbous – adj. – 1. convex, rounded, protuberant; 2. Botany very convex or tumid; 3. Astronomy said of the moon or a planet when the illuminated portion exceeds a semicircle, but is less than a circle; 4. of persons and animals: hunch-backed; having a hump
gibbus – n. – a form of structural kyphosis, where one or more adjacent vertebrae become wedged; Gibbus deformity can be a sequela of advanced skeletal tuberculosis and is the result of collapse of vertebral bodies.