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Definitions

helical

[hel-i-kuhl, hee-li-] / ˈhɛl ɪ kəl, ˈhi lɪ- /
ADJECTIVE
spiral
Synonyms
STRONGEST
circling coiled
STRONG
circular circumvoluted corkscrew curled radial rolled scrolled wound
WEAK
cochlear helicoid screw-shaped tendrillar tortile voluted whorled
Antonyms
WEAK
straight uncurling unwinding

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The tubes measure about 230 nm in diameter and are made of 5 to 6 right-handed helical fibers that twist together.

From Science Daily • Dec. 3, 2025

With Sutherland's new and innovative methods of studying sea creatures, scientists might come to realize that helical swimming is more pervasive than previously thought.

From Science Daily • May 15, 2024

"The helical twist of these fibers is impossible to discern using an optical microscope, or even some super-resolution microscopes, because these things are just too small," Lew said.

From Science Daily • Apr. 26, 2024

In helical magnets, the directions of the atomic magnetic moments are ordered in a spiral.

From Science Daily • Mar. 22, 2024

When he saw the blank regions that characterize helical patterns, he jumped into action, quickly spilling out several possible helical TMV structures.

From "Double Helix" by James D. Watson