Definition of metastasis noun from the Oxford Advanced American Dictionary

 

metastasis

 noun
noun
NAmE//məˈtæstəsəs//
 
(pl. metastases
NAmE//məˈtæstəsiz//
 
)
[uncountable, countable](medical)
 
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the development of tumors in different parts of the body resulting from cancer that has started in another part of the body; a tumor of this type
NAmE//ˌmɛt̮əˈstæt̮ɪk//
 
adjective
See the Oxford Advanced Learner's Dictionary entry: metastasis