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# metric

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noun met·ric \ˈme-trik\

## Definition of metric

1. 1 plural :  a part of prosody that deals with metrical structure

2. 2 :  a standard of measurement <no metric exists that can be applied directly to happiness — Scientific Monthly>

3. 3 :  a mathematical function that associates a real nonnegative number analogous to distance with each pair of elements in a set such that the number is zero only if the two elements are identical, the number is the same regardless of the order in which the two elements are taken, and the number associated with one pair of elements plus that associated with one member of the pair and a third element is equal to or greater than the number associated with the other member of the pair and the third element

## Examples of metric in a sentence

1. <according to the usual metrics by which we judge fiction, this novel is an utter failure>

## Did You Know?

The metric system was invented in France in the years following the French Revolution, and a version of it is now used in most of the world to measure distance, weight, and volume. Basic metric units include the kilogram (the basic unit of weight), the liter (the basic unit of volume), and of course the meter (the basic unit of length—see below). Metric—or more often metrical—can also refer to the basic underlying rhythm of songs and poetry. So while the scientists' measurements are usually metric, the poets' are usually metrical.

## Origin and Etymology of metric

Greek metrikē, from feminine of metrikos in meter, by measure, from metron measure — more at measure

First Known Use: 1760

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## Simple Definition of metric

• : of, relating to, or based on the metric system

Source: Merriam-Webster's Learner's Dictionary

## Full Definition of metric

1. :  of, relating to, or using the metric system <a metric study>

## Examples of metric in a sentence

1. The metric unit of energy is the joule.

## Origin and Etymology of metric

French métrique, from mètre meter

First Known Use: 1864

## Definition of -metric

1. 1 :  of, employing, or obtained by (such) a meter <galvanometric>

2. 2 :  of or relating to (such) an art, process, or science of measuring <geometrical>

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## Definition of metric for Students

1. :  of, relating to, or based on the metric system <metric measurements>

## Word Root of metric

The Greek word metron, meaning “measure,” gives us the root metr. Words from the Greek metron have something to do with measuring. A thermometer is an instrument that measures temperature. A diameter is the measurement across the center of a circle. The metric system is a system used for measuring size, weight, and volume. A perimeter is the measurement of the outside of a figure or shape.

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## Medical Definition of metric

1. :  of, relating to, or using the metric system <a metric study>

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