metric

adj

1. (not-comparable)Of or relating to the metric system of measurement.

   “But the red planet has been a graveyard for Russian, European and American missions, including an embarrassing 1999 NASA fail caused when a computer, running on metric numbers, and engineers, dealing in nonmetric numbers, got their signals crossed.”

2. (not-comparable)Of or relating to the meter of a piece of music.
3. (not-comparable)Of or relating to distance.

noun

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

   “What metric should be used for performance evaluation?”

   “What are the most important metrics to track for your business?”

   “It's the most important single metric that quantifies the predictive performance.”

   “How to measure marketing? Use these key metrics for measuring marketing effectiveness.”

   “There is a lack of standard metrics.”

2. 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×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.

   “As we shall see, these metrics are constructed from a Green function.”

3. A metric tensor.
4. (abbreviation, alt-of)Abbreviation of metric system.

verb

1. (transitive)To measure or analyse statistical data concerning the quality or effectiveness of a process.

   “We need to metric the status of software documentation.”

   “We need to metric the verification of requirements.”

   “We need to metric the system failures.”

   “The project manager is metricking the closure of the action items.”

   “Customer satisfaction was metricked by the marketing department.”