1. Noun
The act of invading; the act of encroaching upon the rights or possessions of another; encroachment; trespass.
2. Noun
A warlike or hostile entrance into the possessions or domains of another; the incursion of an army for conquest or plunder.
3. Noun
The incoming or first attack of anything hurtful or pernicious; as, the invasion of a disease.
4. Noun
(pathology) the spread of pathogenic microorganisms or malignant cells to new sites in the body; "the tumor's invasion of surrounding structures"
Vocabulary classified under Medicine and healthcare
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