Helical
Helical
Helical (pronunciation: /ˈhɛlɪk(ə)l/) is a term derived from the Greek word 'helix', meaning twisted or turned. It is used to describe objects or structures having a spiral or coiled shape. In the field of medicine, the term is often used to describe the structure of certain proteins and DNA.
Etymology
The term 'helical' originates from the Greek word 'helix', which translates to 'twist' or 'turn'. It was first used in the English language in the 1560s to describe spiral shapes.
Related Terms
- Helix: A type of smooth space curve, i.e., a curve in three-dimensional space. It has the property that the tangent line at any point makes a constant angle with a fixed line called the axis.
- Double Helix: The description of the structure of a DNA molecule. A DNA molecule consists of two strands that wind around each other like a twisted ladder.
- Helical Structure: A structure having a shape like that of a helix.
- Helical Tomography: A type of computed tomography (CT) in which the X-ray beam describes a helical path, allowing for continuous, rapid acquisition of data.
- Helical Scan: A method of recording high bandwidth signals onto magnetic tape.
See Also
External links
- Medical encyclopedia article on Helical
- Wikipedia's article - Helical
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