What is Life?

Thinking on the terms of "what is life" there are things that can be examined that might not be exactly alive. 

But first lets see what life really is.......

According to the Webster dictionary, Life  is "the condition that distinguishes organisms from inorganicobjects and dead organisms, being manifested by growth through metabolism, reproduction, and the power ofadaptation to environment through changes originatinginternally."

So if this is all that life is, then is a virus considered to be alive? 

According to the definition, viruses are qualified to be alive because they replicate and do not require a host to do so, but they do use the living thing. But the next question is "Is there only certain types that qualify as being alive?" If we use the fact that viruses replicate then is a computer virus alive? It can be said that viruses are alive at some point but eventually die when they are inactive. Are proteins alive? Through my research, I found to believe that proteins are not alive because they do not contain the parts and are too small. 

Cells are actually considered to be alive because they can replicate proteins and maintain themselves & a virus is DNA AND RNA sitting in a protein capsule.