he·​li·​cal | \ ˈhe-li-kəl How to pronounce helical (audio) , ˈhē- How to pronounce helical (audio) \

Definition of helical

: of, relating to, or having the form of a helix broadly : spiral sense 1a

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Other Words from helical

helically \ ˈhe-​li-​k(ə-​)lē How to pronounce helical (audio) , ˈhē-​ \ adverb

Examples of helical in a Sentence

Sirius, the brightest star in the heavens, travels a helical path through space.
Recent Examples on the Web The effect of this mutation on replication and helical activity is worth further study. William A. Haseltine, Forbes, 20 Sep. 2021 The spokes follow a helical pattern, like a spiral staircase leading through the inside of the bone. Theresa Machemer, Smithsonian Magazine, 16 Apr. 2021 Hills Construction foreman Adam Beazer secures helical stainless steel rods to roof rafters after drilling the rods into the brick walls for seismic reinforcement, Mar. 11, 2021. Brian Maffly, The Salt Lake Tribune, 14 Mar. 2021 Jonas Hultman’s jaw-dropping helical staircase is the apartment’s centerpiece. Joshua Levine, WSJ, 6 Mar. 2021 Instead of the layers of material neatly stacking one on top of another, the layers are twisted, almost like the helical structure of DNA. Matt Simon, Wired, 22 Feb. 2021 These are rotating, helical appendages which act as propellers, so flagellate bacteria are more mobile than those lacking such equipment. The Economist, 16 Jan. 2021 The building will be supported by helical piers — an alternative stilt-like construction method often used at sites with foundation issues. Eddie Morales, Milwaukee Journal Sentinel, 28 Nov. 2020 Best of all are helical cutter heads, which have a couple dozen small square knives that can deliver a near-perfect surface. Bob Beacham, chicagotribune.com, 6 Oct. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'helical.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of helical

1591, in the meaning defined above

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Time Traveler for helical

Time Traveler

The first known use of helical was in 1591

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Dictionary Entries Near helical



helical gear

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Statistics for helical

Last Updated

27 Sep 2021

Cite this Entry

“Helical.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/helical. Accessed 25 Oct. 2021.

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More Definitions for helical


he·​li·​cal | \ ˈhel-i-kəl How to pronounce helical (audio) , ˈhē-li- How to pronounce helical (audio) \

Medical Definition of helical

: of, relating to, or having the form of a helix the helical configuration of DNA broadly : spiral sense 1a

Other Words from helical

helically \ -​k(ə-​)lē How to pronounce helical (audio) \ adverb


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