in‧va‧sive /ɪnˈveɪsɪv/ adjective

1. invasive medical treatment involves cutting into someone’s body:
invasive surgery

2. an invasive disease spreads quickly and is difficult to stop:
invasive bladder cancers

3. an invasive plant spreads quickly in a garden or other area, so that it becomes a problem

[TahlilGaran] Dictionary of Contemporary English ▲