The other word you would use is capacity. As in it has a capacity of 955 cubic centipedes.
Displacement is used as commonly in AUS as Capacity, but they essentially mean the same thing.
http://en.wikipedia.org/wiki/Engine_displacement
http://en.wikipedia.org/wiki/Interna...ngine_capacity
I know the reference is Wiki, but it's the best explanation.
Mick
