Invasion vs. Metastasis

A military action consisting of armed forces of one geopolitical entity entering territory controlled by another such entity, generally with the objective of conquering territory or altering the established government.

The entry without consent of an individual or group into an area where they are not wanted.

Example: ‘an invasion of mobile phones’; ‘an invasion of bees’; ‘an invasion of foreign tourists’;

(medicine) The spread of cancer cells, bacteries and such to the organism.

(surgery) The breaching of the skin barrier.

The act of invading; the act of encroaching upon the rights or possessions of another; encroachment; trespass.

A warlike or hostile entrance into the possessions or domains of another; the incursion of an army for conquest or plunder.

The incoming or first attack of anything hurtful or pernicious; as, the invasion of a disease.

the act of invading; the act of an army that invades for conquest or plunder

any entry into an area not previously occupied;

Example: ‘an invasion of tourists’; ‘an invasion of locusts’;

(pathology) the spread of pathogenic microorganisms or malignant cells to new sites in the body;

Example: ‘the tumor's invasion of surrounding structures’;

An invasion is a military offensive in which large numbers of combatants of one geopolitical entity aggressively enter territory owned by another such entity, generally with the objective of either conquering; liberating or re-establishing control or authority over a territory; forcing the partition of a country; altering the established government or gaining concessions from said government; or a combination thereof. An invasion can be the cause of a war, be a part of a larger strategy to end a war, or it can constitute an entire war in itself.

A change in nature, form, or quality.

(medicine) The transference of a bodily function or disease to another part of the body, specifically the development of a secondary area of disease remote from the original site, as with some cancers.

(metaphor) The spread of a harmful event to another location, like the metastasis of a cancer.

(rhetoric) Denying adversaries' arguments and turning the arguments back on them.

A spiritual change, as during baptism.

A change in the location of a disease, as from one part to another.

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.

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.

the spreading of a disease to another part of the body

the organic processes (in a cell or organism) that are necessary for life

Metastasis is a pathogenic agent's spread from an initial or primary site to a different or secondary site within the host's body; the term is typically used when referring to metastasis by a cancerous tumor. The newly pathological sites, then, are metastases (mets).