volute

Volute is a term used in several fields to describe a spiral or scroll-like form. Its name derives from Latin voluta, meaning a rolled thing.

In architecture, a volute is the spiral scroll ornament on Ionic capitals, typically positioned at the capital’s corners. The motif appears in various scales and orientations and has influenced broader decorative programs beyond the Ionic order.

In malacology, volute refers to shells of the family Volutidae, a diverse group of predatory sea snails. Volute shells are usually elongated and glossy, often with colorful patterns, and are popular among collectors.

In engineering, a volute is the spiral casing surrounding an impeller in centrifugal pumps and some turbines. The volute channels fluid from the impeller, converting kinetic energy to pressure, reducing turbulence, and guiding flow toward the discharge.

The term is also used more broadly to describe other naturally occurring or man-made spiral or scroll-like forms, reflecting its etymological roots related to rolling or curling.