Part of speech: noun
Origin: Greek, late 17th century
An object of spiral or helical shape.
A surface formed by simultaneously moving a straight line along an axis and rotating it around it (like a screw thread).
Examples of Helicoid in a sentence
"The helicoid staircase was the focal point of the ballroom."
"I always got the helicoid measurements wrong on my geometry homework."
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The thread on a screw is a perfect example of a helicoid. It's a shape formed by moving a straight line along an axis as it turns. You can find manmade helicoid structures like a spiral staircase, or you can find many examples of helicoids in the natural world.
Did you Know?
Visit the Guggenheim Museum in Manhattan and you will find yourself inside a helicoid. The works of art are on display in galleries that shoot off a massive spiral-shaped ramp. You can view the helicoid from either the inside or outside of the Guggenheim.