The metre (or meter in US spelling; symbol: m) is the base unit of length in the International System of Units (SI). Since 2019, the metre has been defined as the length of the path travelled by light in vacuum during a time interval of ⁠ 1 / 299 792 458 ⁠ of a second, where the second is defined by a hyperfine transition frequency of ...

METRE definition: 1. a unit of measurement equal to 100 centimetres: 2. the regular arrangement of syllables in…. Learn more.

metre (m), 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.

The essential difference between meter and metre is the variant of English in which they are used. Meter is the American English spelling for the unit of length as well as the measurement device. Metre is the spelling adopted by British English and other English-speaking countries for the same measurement unit and, within the context of poetry ...

A metre (US spelling, meter) is the basic unit of length in the SI measurement system. The symbol for the metre is m. The first meaning (in the French Revolution) was one ten-millionth of the distance between the Earth's equator and the North Pole along the Paris meridian. [1]

4 days ago · The meaning of METRE is chiefly British spelling of meter.

1 day ago · Public metre standard from 17th century, at entrance to Commercial House on Ansgarikirchhof 24 in Bremen. Citizens could bring their metre bars and find out if they were accurate. A bar that just fit between the two projections was exactly one metre. Photo: Jürgen Howaldt – Own work, CC BY-SA 3.0 de / Wikimedia Commons A world divided by ...

A metre is a metric unit of length equal to 100 centimetres. She set a world record in the 100 metre sprint at her national championships. The tunnel is 10 metres wide and 600 metres long.

Illustrated definition of Metre | Meter: The basic unit of length (or distance) in the Metric System. The symbol is m Example: the length of...

3 days ago · The Metre Convention reminds us that science isn’t only about big breakthroughs and bold ideas. Sometimes it’s about consensus and agreeing, together, on what a metre actually is. And even ...