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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.

"Instead, hydrogen moves preferentially along well-defined helical pathways embedded within an ordered carbon structure."

From Science Daily • Apr. 21, 2026

In optics, this concept applies both to materials and to light itself, which can travel in a helical pattern.

From Science Daily • Mar. 21, 2026

Using this approach, the team carved tiny helical structures from a topological magnetic crystal made of cobalt, tin, and sulfur, with the chemical formula Co3Sn2S2.

From Science Daily • Jan. 25, 2026

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

Coolly she pointed out that not a shred of evidence permitted Linus, or anyone else, to postulate a helical structure for DNA.

From "Double Helix" by James D. Watson