1An object of spiral or helical shape.
- ‘If the disk's surface curved a lot, the disk could arrange itself only one way - as a double spiral staircase like a helicoid.’
A surface formed by simultaneously moving a straight line along an axis and rotating it around it (like a screw thread)
- ‘One of the clues that a helicoid is an efficient surface and not just an accident is its ubiquity in nature.’
Of the form of a helix or helicoid.
coiled, helical, helix-shaped, corkscrew, curling, winding, twisting, whorled, scrolledView synonyms
- ‘This new helicoid pin design increases surface area for heat dissipation.’
- ‘Molecules may knit together to form helicoid surfaces, emblems of stable energy states.’
- ‘Arthropod cuticle can produce unusual optical effects, analogous to solutions of liquid crystals, resulting from a layered, helicoid structure.’
- ‘There are helicoid pins fitted into the base, which addresses the heat dissipation weakness of copper.’
- ‘The pin count for that cooler was 371 helicoid pins.’
Late 17th century: from Greek helikoeidēs of spiral form from helix, helik- (see helix).