Library / English Dictionary

    DOUBLE HELIX

    Pronunciation (US): Play  (GB): Play

     I. (noun) 

    Sense 1

    Meaning:

    A pair of parallel helices intertwined about a common axisplay

    Example:

    the shape of the DNA molecule is a double helix

    Classified under:

    Nouns denoting two and three dimensional shapes

    Hypernyms ("double helix" is a kind of...):

    helix; spiral (a curve that lies on the surface of a cylinder or cone and cuts the element at a constant angle)

    Credits

     Context examples: 

    While many have shown that sleep helps the brain store new memories, others, including Francis Crick, the co-discoverer of the DNA double helix, have raised the possibility that sleep – in particular REM sleep – may be a time when the brain actively eliminates or forgets excess information.

    (The brain may actively forget during dream sleep, National Institutes of Health)


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