I had to revive this thread to bring up another thought to this idea.
I just spent about 20 minutes here on RCU looking for a definition for "aspect ratio"
Found alot of math, but not the definition.

A page full of definitions would also be kinda handy.
I know parts and pieces of different things are around the forums but a collection in one spot would be cool.
Yeah it would take a few pages but it would be helpful.
Added to this could be a table of formulas like, wing loading, tail volume, etc.