meter 4 of 6 noun (4) me· ter ˈmē-tər 1 : an instrument for measuring and sometimes recording the time or amount of something a parking meter a gas meter 2 : postage meter also : a marking printed by a postage meter meter 5 of 6 verb me· ter ˈmē-tər metered; metering; meters transitive verb 1 : to measure by means of a meter 2

Jan 20, 2023 · metre (m), also spelled meter, in measurement, fundamental unit of length in the metric system and in the International Systems of Units (SI). It is equal to approximately 39.37 inches in the British Imperial and United States Customary systems.

Feb 2, 2022 · The meter is the basic unit of length in the SI system of units. The meter is defined to be the distance light travels through a vacuum in exactly 1/299792458 seconds. An interesting effect of the definition of the meter this way is that it fixes the speed of light in a vacuum to the exact value of 299,792,458 m/s. The previous definition of the meter was one ten-millionth of …

The metre is defined as the path length travelled by light in a given time, and practical laboratory length measurements in metres are determined by counting the number of wavelengths of laser light of one of the standard types that fit into the length, [115] and converting the selected unit of wavelength to metres.

noun. the fundamental unit of length in the metric system, equivalent to 39.37 U.S. inches, originally intended to be, and being very nearly, equal to one ten-millionth of the distance from the equator to the pole measured on a meridian: defined from 1889 to 1960 as the distance between two lines on a platinum-iridium bar (the “International Prototype Meter”) preserved at the …

Jun 23, 2021 · A meter is a metric unit of length used worldwide by scientists to measure lengths and distances between objects. The Imperial system of measurement of one meter is approximately 3.28 feet. In...

1. Any of various devices designed to measure time, distance, speed, or intensity or indicate and record or regulate the amount or volume, as of the flow of a gas or an electric current. 2. A postage meter. 3. A parking meter. tr.v. me·tered, me·ter·ing, me·ters. 1. To measure with a meter: meter a flow of water.

May 9, 2019 · A meter would be defined as a precise number of multiples of this wavelength. In 1951, NIST distributed 13 “Meggers lamps” to scientific institutions and industry labs. The agency sought to further increase the precision of its technique for redefining the meter.

Definition: A meter, or metre (symbol: m), is the base unit of length and distance in the International System of Units (SI). The meter is defined as the distance traveled by light in 1/299 792 458 of a second. This definition was slightly modified in 2019 to reflect changes in the definition of the second.

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