NCIt definition : A unit of linear measure in the metric system, one of the seven base units of the
International System of Units (Systeme International d'Unites, SI). A meter is defined
as the length of the path traveled by light in a vacuum during a time interval of
1/299 792 458 of a second and is equal to 1.093 61 yards.;
Alternative definition : CDISC: A meter is defined as the length of the path traveled by light in a vacuum
during a time interval of 1/299 792 458 of a second and is equal to 1.093 61 yards.(NCI);