helix /hēˈliks/

1. A screw-shaped coil
2. A curve on a developable surface (esp a right circular cylinder) which becomes a straight line when the surface is unrolled into a plane, distinguished from a spiral, which is a plane curve (mathematics)
3. The rim of the ear (anatomy)
4. A small volute or twist in the capital of a Corinthian column (architecture)
5. A screw-propeller
6. (with cap) a genus of molluscs including the best-known land snails
7. One of the genus

helical /helˈik-əl/ adjective

helˈically adverb

helicase /hēˈli-kāz/ noun

Any of a group of enzymes that are able to separate the strands of the double-helix of a DNA molecule

Helicidae /-isˈi-dē/ plural noun

A large family of terrestrial, air-breathing gastropods, including the common snails

helˈicograph noun

A drawing instrument for describing spirals on a plane

helˈicoid or helˈicoidal adjective

Like a helix, screw-shaped

helispherˈic or helispherˈical adjective

Loxodromic

helicobacˈter pylori /pī-löˈrī/ noun

A bacterium that is a cause of inflammation of the stomach lining, often leading to ulcers or cancer

helicoid cyme noun

A bostryx

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