metastasize

1. To be transmitted or transferred by metastasis.
2. To be changed or transformed, especially dangerously: "a need for love that would metastasize into an insatiable craving for attention" (Michiko Kakutani).
3. To spread, especially destructively: " (Gore Vidal).

To be transmitted or transferred by or as if by metastasis.

To form new foci of disease in a distant part by metastasis.

The verb has one meaning:

Meaning #1: spread throughout the body, of cancer cells
  Synonym: metastasise