One of the mysteries of the English language finally explained.
The surface generated by rotating a catenary about its horizontal axis.
- ‘The catenoid is a minimal surface with ‘too much’ negative curvature.’
- ‘These catenoids are the first explicitly known discrete minimal surfaces besides the trivial plane.’
- ‘The bidenoid is a well-controlled modification of the catenoid by Hermann Karcher.’
- ‘Again, branched catenoids can exist only if an upper limit for the distance of neighbouring nets is not exceeded.’
- ‘Soap bubbles and cell membranes are often catenoids, and molecules may knit together to form helicoid surfaces, emblems of stable energy states.’
Late 19th century: from Latin catena ‘chain’ + -oid.
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