The word invasive is an adjective and is used usually in very formal English. The meaning it conveys is that of something that is spreads very rapidly and it is very difficult for anybody to stop it. You can find its use mostly when talking about a disease that is spreading within the body. Sometimes even the surgery that is performed to stop the spread of a disease in your body can be attributed with the same name. You can find the use of the word when talking about cancer as it is considered as the kind of disease that spread very fast within the body.
The word can trace its origin in the word invasion that conveys the idea of attack by an army.
The word can trace its origin in the word invasion that conveys the idea of attack by an army.
