metastasis

(meh-TAS-tuh-sis) The spread of cancer from one part of the body to another. A tumor formed by cells that have spread is called a "metastatic tumor" or a "metastasis." The metastatic tumor contains cells that are like those in the original (primary) tumor. The plural form of metastasis is metastases (meh-TAS-tuh-SEEZ).

(meh-tas'teh-sis) the transfer of disease from one organ or part of the body to another that is not directly connected with it.

(muh-TASS-tuh-sis): When cancer spreads to other parts of the body.

The spread of cancer cells to previously unaffected organs.