What is the medical term meaning Malignant tumor of connective or supportive tissue?

Sarcoma (for examp. Langerhern Cell Sarcoma, Sarcoma of Ewing).

addition! Reticulosarcoma (means sarcoma of the reticulocyte cells)

A malignant tumor of connective tissue is called Sarcoma.

There are three different subcategories: Hard Tissue Sarcomas (can occur in bone or cartilage), Soft Tissue Sarcomas (can occur in muscles, tendons, or lymphatic vessels) , and Liquid Tissue Sarcomas (can occur in blood and lymph)