Newbie-ish question:

OK, say you have a Squier, an SX, a Fender MIM, and an American Fender strat and each is advertised as having a "solid alder body."

However, the definition of "solid" can certainly mean different things. As far as I know, most (if not all) Squiers are made of different pieces of wood glued together and shaped into a strat body. The American strat (and I presume the MIM) are made of a single piece of wood. I'm not sure about the SX, but I presume it's similar to the Squier. (If I'm wrong about any of these, please correct me.)

How can you tell which guitars are built from a single piece versus several pieces? Also, is it really fair advertising to call a multi-piece body a "solid" body?