### adjective

**(1) **The rhythmic arrangement of syllables

**(2) **Based on the meter as a standard of measurement

"The metric system"

"Metrical equivalents"

### noun

**(3) **A system of related measures that facilitates the quantification of some particular characteristic

**(4) **A decimal unit of measurement of the metric system (based on meters and kilograms and seconds)

"Convert all the measurements to metric units"

"It is easier to work in metric"

**(5) **A function of a topological space that gives, for any two points in the space, a value equal to the distance between them

### Etymology

From

*mÃ©trique* (1864) < < ; see meter.

### Adjective

- of or relating to the metric system of measurement
- of or relating to the meter of a piece of music.

### Noun

- A measure for something; a means of deriving a quantitative measurement or approximation for otherwise qualitative phenomena (esp. used in Software Engineering)
- A measurement of the "distance" between two points in some metric space: it is a function
*d*(*x*,*y*) between points *x* and *y* satisfying the following properties: (1) "positive definiteness": $d(x,y)\; \backslash ge\; 0$ and $d(x,y)\; =\; 0\; \backslash mbox\{\; iff\; \}\; x=y$, (2) "symmetry": $d(x,y)\; =\; d(y,x)$, and (3) "triangle inequality": $d(x,y)\; \backslash le\; d(x,z)\; +\; d(z,y)$.