What is the meaning of Metric?

Of or relating to the metric system of measurement.

Of or relating to the meter of a piece of music.

Of or relating to distance.

A measure for something; a means of deriving a quantitative measurement or approximation for otherwise qualitative phenomena (especially used in engineering).

A function which satisfies a particular set of formal conditions, created to generalize the notion of the distance between two points. Formally, a real-valued function $d$ on $M\times M$ , where $M$ is a set, is called a metric if (1) $d(x,y)=0$ if and only if $x=y$ , (2) $d(x,y)=d(y,x)$ for all pairs $(x,y)$ , and (3) $d$ obeys the triangle inequality.

To measure or analyse statistical data concerning the quality or effectiveness of a process.

Source: wiktionary.org

See also