What does rectangular mean?
Rectangular describes an object or shape that has four straight sides and four right angles. It is the standard adjective for identifying this geometric form, whether referring to a piece of furniture, a building, a field, or a coordinate system. The word can also describe something arranged in a rectangular grid or characterized by straight, perpendicular axes. Unlike terms such as square, which specify equal sides as well as right angles, rectangular allows the sides to have different lengths. The expression “rectangular shape” is especially common in technical and educational contexts, while “rectangular” alone appears readily in descriptions of architecture, packaging, screens, and visual design.
adjectiveHaving the shape of a rectangle, with four straight sides and four right angles. In mathematics and design, the term may also refer to anything characterized by perpendicular horizontal and vertical axes.
- Having the shape of a rectangle, with four straight sides and four right angles.
- Relating to or arranged in a rectangle, especially in mathematics, architecture, or graphic design.
"The architect chose a rectangular table so that everyone at the meeting could face the speaker."
"The rectangular windows were arranged in a neat grid across the building's façade."
"In computer graphics, the program stores the position of each object within a rectangular coordinate system."
A rectangle's defining feature is not its proportions: even a very long, narrow rectangle still has four perfect right angles.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does rectangular come from?
The word derives from Latin rectangulus, meaning “right-angled,” a compound of rectus (“right, straight”) and angulus (“angle”). It entered English through the related noun rectangle and its adjective form. The same Latin roots appear in words such as rectilinear, rectitude, and correct, all connected with ideas of straightness, rightness, or proper direction.
Related word forms
How rectangular is actually used
The word is formal and technical, but it is also common in everyday descriptions of objects and layouts. It is frequently used in mathematics, architecture, graphic design, and engineering.
Easily confused with rectangular
Rectangular is the adjective describing a shape or object, whereas rectangle is the noun naming that shape.
A regular shape has equal sides and consistent angles, while a rectangular shape specifically has four right angles and opposite sides of equal length.