meter

Definitions

noun a piece of equipment for counting how much of something such as time, water or gas has been used
noun the thirteenth letter of the alphabet, between L and N

noun a device to measure a physical property such as current, rate of flow or air speed

The base unit of length in the metric system of measurement. A meter is equivalent to 39.37 inches.
A device for measuring the flow of liquid, gas, or electrical current. See Table of Equivalents in Appendix.

The SI unit of distance. It is defined as the distance that makes the speed of light in a vacuum exactly 299,792,458 meters per second. Thus, a meter is the distance traveled by light in a vacuum during a time interval of 1/299792458 second. Its abbreviation is m. Also spelled metre.
An instrument or device which is utilized to measure, and usually indicate, a physical quantity or other value. There are numerous examples, including ammeters, absorptiometers, barometers, chronometers, dB meters, galvanometers, and voltmeters.
symbolm
A prefix which serves to produce derivative words pertaining to mobile communications concepts. For instance, m-business, or m-mail. It is an abbreviation of mobile.

noun a device installed inside or outside a residential or commercial building to measure the amount of electricity consumed in a specific period

M type stars are the coolest of all, with surface temperatures of less than 3500°. Such stars are cool enough to allow some molecules – rather than just isolated atoms – to exist in their outer layers. M stars tend to be orange in colour and Betelgeuse in Orion is the classic member of the class.
Prefix for object designations in the Messier Catalogue

In economic models involving international trade, M is usually chosen to represent imports, and X to represent exports, perhaps because I and E have too many other uses.

prefix one million.
prefix symbol for 1,048,576, used only in computer and electronic related applications.