1. Having the shape or form of a helix; spiral or coiled in a helical pattern.
Usage: Formal; used in mathematics, geometry, and technical contexts

Examples

• The DNA molecule has a helicoidal structure that allows it to store genetic information.
• The architect designed a helicoidal staircase that spiraled elegantly around the central column.
• The helicoidal shape of the seashell fascinated the marine biologist.
• Engineers used helicoidal gears to transfer motion between perpendicular shafts.
• The helicoidal pattern of the galaxy's arms extends outward from its center.