quadra

Architectural molding frame

Quadra is a Latin-derived combining form meaning four, appearing in terms like quadrant and quadrilateral.

As a standalone noun, quadra refers to a square frame or border in architecture, or historically, a Roman unit of measurement.

In some contexts, particularly in personality theory systems like socionics, a quadra is one of four groups that share certain values or cognitive patterns.

geometry

parallelogram

Quadrilateral with paired parallels

rectangleFour-sided, all right angles
trapezoidPolygon with parallel pair
rhombusEquilateral parallelogram

square · polygon · vertex · angle · diagonal · perimeter · area · plane · symmetry · four-sided

four

quartet

Ensemble of four

quadrupleMultiplied by four
tetradGroup of four units
quaternionHypercomplex number with four components

quadruplet · quaternary · quadriceps · quadrille · quadriga · fourfold · quadripartite · quarter · quartered

plaza

piazza

Public urban square

courtyardEnclosed open-air space
squareRhombus with right angles
plazaPublic open square

esplanade · promenade · marketplace · gathering · public · urban · civic · colonial · neighborhood

cityblock

block

Solid mass, or impede

gridFramework of intersecting lines
neighborhoodResidential area nearby
districtBounded administrative area

section · zone · quarter · street · urban · municipal · city

Opposites

shape geometry

quadratorus

Doughnut-shaped solid

roundel · annulet · tondo · lunette · medallion

molding profile

quadraogee

S-shaped architectural curve

Phrases

quadratic formulaEquation solving ax²+bx+c=0
quadratic equationsPolynomials of degree two
quadrate boneUpper jaw joint bone
quadratic functionPolynomial with highest power two

Family

quadrangle, quadrant, quadrilateral, quadratic, quadrennial, quadrate, quadriplegic, quadriplegia, quadrupeds

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