!!! Overview [{$pagename}] (or [metre])is the base unit of [length] in the [International System of Units] ([SI]). The SI unit symbol is [m] The [{$pagename}] is defined as the length of the path travelled by light in a vacuum in: 1/299,792,458 of a [second] !! More Information There might be more information for this subject on one of the following: [{ReferringPagesPlugin before='*' after='\n' }]