Osteosarcoma \Os`te*o*sar*co"ma\, n.; pl. Osteosarcomata. [NL.
   See Osteo-, and sarcoma.] (Med.)
   A tumor having the structure of a sarcoma in which there is a
   deposit of bone; sarcoma connected with bone.
   [1913 Webster]

	

	osteosarcoma
    n 1: malignant bone tumor; most common in children and young
         adults where it tends to affect the femur [syn:
         osteosarcoma, osteogenic sarcoma]