TERA Rising is a free to play 3D action MMORPG based on a non-targeting system, where players will have direct control over their character's combat.
virtuosity. 1  the character, ability, or skill of a virtuoso. 2  a fondness for or interest in virtu.
Ratio scales are measurement systems that possess all three properties: magnitude, intervals, and rational zero. The added power of a rational zero allows ratios of numbers to be meaningfully interpreted; i.e. the ratio of John's height to Mary's height is 1.32, whereas this is not possible with interval scales.