"invasions" in the noun sense
1. invasion
the act of invading the act of an army that invades for conquest or plunder
2. invasion, encroachment, intrusion
any entry into an area not previously occupied
"an invasion of tourists"
"an invasion of locusts"
3. invasion
pathology) the spread of pathogenic microorganisms or malignant cells to new sites in the body
"the tumor's invasion of surrounding structures"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License