What does curvilinear mean?
Curvilinear is an adjective describing anything made up of, bounded by, or moving along curved lines rather than straight ones. It is most at home in technical and design contexts: architects speak of curvilinear façades, mathematicians use curvilinear coordinate systems, and physicists describe curvilinear motion when an object traces a curved path through space. In discussions of art and architecture, the word often carries a positive connotation, evoking grace, organic form, and visual softness — the sweeping curves of a Guggenheim ramp or the flowing lines of Art Nouveau are quintessentially curvilinear. Its natural opposite is rectilinear, meaning composed of straight lines, and the contrast between the two terms is a staple of architectural criticism. Derived from Latin roots relating to curves and lines, curvilinear offers writers a precise, slightly formal alternative to plain words like 'curved', lending descriptions of shape and movement both accuracy and elegance.
Consisting of, bounded by, or characterized by curved lines rather than straight ones.
"The building's curvilinear silhouette softened the city's rigid skyline."
Moving or progressing along a curved path.
"The satellite follows a curvilinear orbit governed by gravitational forces."
From Frank Lloyd Wright's curvilinear museum ramps to the curved paths planets trace around the sun, this word captures everything geometry's straight lines leave out.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of curvilinear
Curvilinear derives from Latin: 'curvus', meaning bent or curved, combined with 'linearis', meaning of or belonging to lines, from 'linea'. The word entered English in the late seventeenth to early eighteenth century, initially in mathematical and geometrical contexts before broadening into architecture and design. It shares its two Latin components with English cognates such as 'curve' and 'line', making it a transparent compound whose parts still plainly announce its meaning.
Related word forms
How curvilinear is actually used
A somewhat formal, technical term common in architecture, design, mathematics, and physics. It carries connotations of elegance and organic flow when applied to art and design, but is purely descriptive in scientific contexts. The spelling 'curvi-linear' appears occasionally in older texts.
Easily confused with curvilinear
Rectilinear means composed of or moving in straight lines, the direct opposite of curvilinear.