Definition of metastasis
metastases
play \-ˌsēz\1a : change of position, state, or formb : the spread of a disease-producing agency (such as cancer cells) from the initial or primary site of disease to another part of the body metastasis of breast cancer to bone — Medical Physics; also : the process by which such spreading occurs
2 : a secondary malignant (see malignant 2) tumor resulting from metastasis
From the M-W Editors
Recent Examples of metastasis from the Web
-
That process is known as metastasis — a word synonymous, for anyone who has experience with cancer, with doom.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'metastasis'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of metastasis
New Latin, from Late Latin, transition, from Greek, from methistanai to change, from meta- + histanai to set — more at stand
First Known Use: 1663
Medical Dictionary
metastasis
playMedical Definition of metastasis
metastases
\-ˌsēz\play1a: change of position, state, or formb: the spread of a disease-producing agent (as cancer cells or bacteria) or disease from the initial or primary site of disease to another part of the body The overwhelming concern about prostate cancer is its potential for metastasis—for cells to escape the gland and take root in lymph nodes, bones, lungs, skin, or other tissue.—Tom Alexander, Fortune, 20 Sept. 1993; also : the process by which such spreading occurs
2: a secondary malignant tumor resulting from metastasis … radiation has no known effect on distant metastases from breast cancer …—David Plotkin, The Atlantic Monthly, June 1996
Learn More about metastasis
-
Britannica English: Translation of metastasis for Arabic speakers Britannica.com: Encyclopedia article about metastasis
Seen and Heard
What made you want to look up metastasis? Please tell us where you read or heard it (including the quote, if possible).
Writing? Check your grammar now!