Lately I was browsing through the glossary (which is quite a nice item indeed) and I think that the definition of 'Displacement' needs a little update. In this definition there is refered to the displacement and the number of cylinders of a formula 1 engine which, obviousely, has changed a bit.
EDIT: After a little more browsing I found that 'qualifying' is also a little bit off. I'm affraid this is the case with a lot of definitions refering to today's regulations.