Definitions:

1. Describes something that is four-sided or square-shaped, often used in geometry, architecture, and description of objects with four distinct angles and sides. ADJECTIVE
   • She chose a quadrangular table for the dining room to minimize seating in the limited space.
2. In architecture, can describe structures or spaces that are shaped like a quadrangle, having four sides and often used in reference to the layout of buildings or courtyards. ADJECTIVE
   • The quadrangular courtyard of the mansion was adorned with marble statues and lush greenery.
3. In mathematics, pertains to any figure with four angles and four sides, essentially synonymous with "quadrilateral". ADJECTIVE
   • For the math competition, the students were asked to calculate the area of a quadrangular field given only the lengths of its diagonals and the angle between them.
4. In medical or anatomical contexts, might describe a structure resembling a quadrangle in shape, such as certain muscles or bones. ADJECTIVE
   • The quadrangular cartilage of the nose, plays a crucial role in supporting the structure of the nasal septum and maintaining open nasal passages.

Synonyms:

• four-cornered
• four-sided
• miltilateral
• quadrilateral