Definition of: metastasis

(mə·tas′tə·sis) noun plural ·ses (-sēz)
1. Change of one thing into another.
2. Metabolism.
3. Pathol. The transfer of a disease or of its manifestations from one part of the body to another.
4. In rhetoric, a rapid change from one point to another. [<L <Gk. <methistanai place differently, change <meta- after + histanai place]
—met′a·stat′ic (-stat′·ik) adjective
—met′a·stat′i·cal·ly adverb