I think biotechnology, the semantic definition, is the application of advanced technology--in other words, not average know-how or capability--to biology to develop new products, new processes, and new knowledge. I think one of the best examples and earliest examples of biotechnology is beer and the fermentation system used to generate beer. That biotechnology has been around for a long, long time. I can't remember now, but there have been some recent studies that found that the first beer was made 10,000 years ago, or something like that. That's an example.
So it's not just GM; it's the application of advanced knowledge of technology to biological systems.