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View synonyms for helicoid

helicoid

[ hel-i-koid, hee-li- ]

adjective

  1. coiled or curving like a spiral.


noun

  1. Geometry. a warped surface generated by a straight line moving so as to cut or touch a fixed helix.

helicoid

/ ˈhɛlɪˌkɔɪd /

adjective

  1. biology shaped like a spiral

    a helicoid shell

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


noun

  1. geometry any surface resembling that of a screw thread
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

helicoid

/ hĕlĭ-koid′,hēlĭ- /

Adjective

  1. Arranged in or having the approximate shape of a flattened coil or spiral curve.


Noun

  1. A surface in the form of a coil or screw. A helicoid is generated mathematically by rotating a plane or twisted curve about an axis at a fixed rate and simultaneously translating it in the direction of the line of axis, also at a fixed rate.
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Derived Forms

  • ˌheliˈcoidally, adverb
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Other Words From

  • heli·coidal adjective
  • heli·coidal·ly adverb
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Word History and Origins

Origin of helicoid1

First recorded in 1690–1700, helicoid is from the Greek word helikoeidḗs of spiral form. See helic-, -oid

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helicographhelicoid cyme