- 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.
Meaning of 'invasion' (Princeton's WordNet)
1 . invasion
[ n]
Meaning (1): - any entry into an area not previously occupied
Example in sentence:
an invasion of locusts;
an invasion of tourists
Meaning (2): - (pathology) the spread of pathogenic microorganisms or malignant cells to new sites in the body