kaposi's sarcoma: a sarcoma that starts with purplish spots on the feet and legs and spreads from the skin to lymph nodes and internal organs; a common manifestation of AIDS
sarcoma: a usually malignant tumor arising from connective tissue (bone or muscle etc.); one of the four major types of cancer
function call: a call that passes control to a subroutine; after the subroutine is executed control returns to the next instruction in main program