Definition of Double helix

1. Noun. A pair of parallel helices intertwined about a common axis. "The shape of the DNA molecule is a double helix"

Generic synonyms: Helix, Spiral

Definition of Double helix

1. Noun. A metonym for DNA. ¹

¹ Source:

Medical Definition of Double helix

1. Conformation or shape that two linear strands of DNA assume when bonded together and become twisted into a helix. (10 Nov 1998)

Double Helix Pictures

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Lexicographical Neighbors of Double Helix

double file
double first
double firsts
double flap amputation
double flat
double flats
double fracture
double glazing
double gold
double grave accent
double grave accents
double gut shot
double gut shots
double happiness
double helices
double helix (current term)
double helixes
double hemiplegia
double immunodiffusion
double indemnity
double inlet atrioventricular connections
double intussusception
double jeopardy
double jump
double jumped
double jumping
double jumps
double kiss
double kisses
double knit

Literary usage of Double helix

Below you will find example usage of this term as found in modern and/or classical literature:

1. Science by American Association for the Advancement of Science (1883)
"The diameter of double-helix DNA determined by electron microscopy of shadow- ... The five-gene tryptophan operon in E. coll il ~ 2.3 дт of double-helix DNA ..."

2. Supplement to the English Botany of the Late Sir J. E. Smith and Mr. Sowerby by Sir William Jackson Hooker, James Sowerby, William Borrer, John William Salter (1849)
"Capsule deep brown ; seeds brown ; spiral filaments in a double helix. Anthers single or in pairs in the axils of the upper leaves. ..."

3. Genomic Signal Processing and Statistics by R. Dougherty, Edward R Dougherty (2005)
"As shown in Figure 1.3, along the two strands of the DNA double helix, a pyrimidine in one chain always faces a purine in the other, and only the base pairs ..."

4. Elements of Mechanism by Peter Schwamb, Allyne Litchfield Merrill, Walter Herman James (1921)
"181, the result would be called a double helix; three lines would give a triple helix, and so on. If the helix slopes as in Fig. FIG. ..."

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