转移, 转移瘤, 转移灶

Metastasis \Me*tas"ta*sis\, n.; pl. {Metastases}. [L.,
transition, fr. Gr. ?, fr. ? to place in another way; ? after
+ ? to place.]
1. (Theol.) A spiritual change, as during baptism.

2. (Med.) A change in the location of a disease, as from one
part to another. --Dunglison.

3. Especially: The migration of cancerous or malignant cells
from the site of their origin to other parts of the body.
Such cells may migrate to multiple new locations, making
therapy more difficult and often leading to death.
[PJC]

4. (Physiol.) The act or process by which matter is taken up
by cells or tissues and is transformed into other matter;
in plants, the act or process by which are produced all of
those chemical changes in the constituents of the plant
which are not accompanied by a production of organic
matter; metabolism.