Noun
 (applied sciences) the science, and associated technology, of the automatic recording and transmission of data from a remote source to a receiving station for analysis

Adjective
 Of or relating to the metric system of measurement.
 (music) Of or relating to the meter of a piece of music.
 (mathematics, physics) Of or relating to distance.
Noun
 A measure for something; a means of deriving a quantitative measurement or approximation for otherwise qualitative phenomena (especially used in engineering).
 (mathematics) A function for the measurement of the “distance” between two points in some metric space: it is a realvalued function d(x,y) between points x and y satisfying the following properties: (1) “nonnegativity”:
d
(
x
,
y
)
≥
0
{displaystyle d(x,y)geq 0}
, (2) “identity of indiscernibles”:
d
(
x
,
y
)
=
0
iff
x
=
y
{displaystyle d(x,y)=0{mbox{ iff }}x=y}
, (2) “symmetry”:
d
(
x
,
y
)
=
d
(
y
,
x
)
{displaystyle d(x,y)=d(y,x)}
, and (3) “triangle inequality”:
d
(
x
,
y
)
≤
d
(
x
,
z
)
+
d
(
z
,
y
)
{displaystyle d(x,y)leq d(x,z)+d(z,y)}
.
 (mathematics) A metric tensor.
 Abbreviation of metric system.
Synonyms
 measure
 (mathematics): distance function
Hyponyms
 (mathematics): Euclidean metric, Hausdorff metric, spacetime metric, uniform metric, ultrametric
Examples
 As for the large number of official statements that Spain is safe, I think they are merely a metric of the complacency that has characterised the European crisis from the start.
 Economics is a messy discipline: too fluid to be a science, too rigorous to be an art. Perhaps it is fitting that economists’ mostused metric, gross domestic product , is a tangle too. GDP measures the total value of output in an economic territory. Its apparent simplicity explains why it is scrutinised down to tenths of a percentage point every month.
 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.
 As we shall see, these metrics are constructed from a Green function.
Verb
 (transitive, aerospace, systems engineering) To measure or analyse statistical data concerning the quality or effectiveness of a process.
Examples
 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.
