exostosis

As a noun exostosis

is a benign bony growth, often covered with cartilage, on the surface of a bone or tooth.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between torus and exostosis

is that torus is torus (shape) while exostosis is a benign bony growth, often covered with cartilage, on the surface of a bone or tooth.

As nouns the difference between exostosis and hyperostosis

is that exostosis is a benign bony growth, often covered with cartilage, on the surface of a bone or tooth while hyperostosis is an excessive growth or thickening of bone.

As nouns the difference between exostosis and enchondroma

is that exostosis is a benign bony growth, often covered with cartilage, on the surface of a bone or tooth while enchondroma is a cartilage cyst found in the bone marrow.

As nouns the difference between exostosis and exostoses

is that exostosis is a benign bony growth, often covered with cartilage, on the surface of a bone or tooth while exostoses is .

As nouns the difference between enostosis and exostosis

is that enostosis is a small area of compact bone within the cancellous bone while exostosis is a benign bony growth, often covered with cartilage, on the surface of a bone or tooth.

As nouns the difference between exosmosis and exostosis

is that exosmosis is osmosis in which fluid flows through a membrane towards a region of lower concentration while exostosis is a benign bony growth, often covered with cartilage, on the surface of a bone or tooth.