Wordnet 3.0
VERB (1)
1. 
 spread throughout the body; 
- Example: "the cancer had metastasized and the patient could not be saved"[syn: metastasize, metastasise]
The Collaborative International Dictionary of English v.0.48:
metastasize \metastasize\ v.
   to spread from one part of the body to other parts, and grow
   there; to spread by metastasis[3]; -- said of cancer cells.
   [WordNet 1.5]
WordNet (r) 3.0 (2006):
metastasize
    v 1: spread throughout the body; "the cancer had metastasized
         and the patient could not be saved" [syn: metastasize,
         metastasise]