Length is a physical quantity, most commonly referred as the longest dimension of the object, which is the distance between its two most distant points, measured in horizontal extent, as opposed to height, measured in vertical extent, as well as the width or thickness, measured across the object at right angles to the length.
Among other spatial variables length is the value of a single dimension, whereas area - two-dimensional, volume - three-dimensional.
In physical science and engineering term "length" is used as a synonym for "distance" and is denoted by L or l.
In most systems length is one of the fundamental unit which forms basis for other units. In the International System of Units (SI), basic unit of length is meter.Read more