Longman Dictionary of Contemporary English homepage

Topic: SHAPES, PATTERNS

double helix

 noun
     
double helix [countable] technical
CFHBM a shape consisting of two parallel spirals that twist around the same centre, found especially in the structure of DNA
Definition of double helix from the Longman Dictionary of Contemporary English within
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arc arch ball(n) ball(v) bar check chevron coil crescent cube curl(v) curl(n) curvature curved cylinder cylindrical diagonal diamond disc dome floral formation geometric globe heart hemisphere hooked lattice moon oval pattern peak pentagon perimeter pointed pyramid radial rectangle rectangular regular roll round(a) round(n) round(v) rounded shape solid spatial sphere spiral spotted square squared star stripe striped symmetrical symmetry three-dimensional triangle triangular tubular vague

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