tu·ber·os·i·ty 
(t′bə-rŏsĭ-tē, ty′-)
(t′bə-rŏsĭ-tē, ty′-)n. pl. tu·ber·os·i·ties
1. The quality or condition of being tuberous.
2. A projection or protuberance, especially one at the end of a bone for the attachment of a muscle or tendon.