invasive

Of or pertaining to invasion; offensive.

Of an organism: that grows (especially uncontrollably) in environments which do not harbour natural enemies, often to the detriment of native species or of food or garden flora and fauna.

Of a carcinoma or other abnormal growth: that invades healthy tissue, especially rapidly.

Of a procedure: involving the entry of an instrument into part of the body.

Intrusive on one's privacy, rights, sphere of activity, etc.

That invades a foreign country using military force; also, militarily aggressive.

Originating externally.

An invasive organism, such as an animal or plant.