A capriccio.
A brief romance.
An unpredictable or sudden condition, change, or series of changes.
An impulsive, seemingly unmotivated action, change of mind, or notion.
A disposition to be impulsive.
The concentration of a solution expressed in gram equivalent weights of solute per litre of solution.
A measure of how well an observed distribution approximates a normal distribution.
The state of being normal or usual; normalcy.