Vibrations increase in rapidity as a note rises and decrease as it falls.
The rapidity of the Russian pursuit was just as destructive to our army as the flight of the French was to theirs.
She wrote with the rapidity of Walter Scott and the regularity of Anthony Trollope.
The chief cause of the wastage of Napoleon's army was the rapidity of its movement, and a convincing proof of this is the corresponding decrease of the Russian army.
In this way a train is distributed with great rapidity, especially if the points giving access to the different sidings are worked by power so that they can be quickly manipulated.