Width

Width is a measure of an object's extent in a particular direction, defined as the distance between two opposite boundaries that lie on lines parallel to that direction. It is a complementary dimension to length and height and is frequently treated as the horizontal dimension in a given orientation. In geometry, width can be described as the distance between two parallel support lines that enclose a figure. For a circle, the width in every direction is equal and equals the diameter. For a rectangle, width refers to one of the side lengths and may vary with how the shape is oriented or labeled. In many contexts width is synonymous with breadth; the choice of term depends on convention.

Width appears in a wide range of practical applications. In engineering and construction, road width and corridor width affect capacity and usability. In textiles and manufacturing, fabric width constrains how components are cut and assembled. In design and typography, width describes the horizontal extent of characters and text blocks; in CSS and digital imagery, width determines layout and wrapping. In printing and publishing, the page width or column width governs margins and line length. Measurements are taken in standard units such as meters, feet, inches, or pixels, and may be specified relative to a reference axis or to the object’s longest cross-section.

In summary, width is a basic geometric and practical measure describing how wide an object is along a chosen direction, varying with orientation and context.