Meaning of INVASION in English
noun the incoming or first attack of anything hurtful or pernicious; as, the invasion of a disease.
2. invasion ·noun the act of invading; the act of encroaching upon the rights or possessions of another; encroachment; trespass.
3. invasion ·noun a warlike or hostile entrance into the possessions or domains of another; the incursion of an army for conquest or plunder.
Webster English vocab. Английский словарь Webster. 2012