WordReference Random House Unabridged Dictionary of American English © 2026
dou′ble he′lix, [Biochem.,Genetics.]
  1. Genetics, Biochemistrythe spiral arrangement of the two complementary strands of DNA.
  • term introduced by J.Dutch. Watson and French.H.C. Crick 1953

Collins Concise English Dictionary © HarperCollins Publishers::
double helix
  1. the form of the molecular structure of DNA, consisting of two helical polynucleotide chains linked by hydrogen bonds and coiled around the same axis
'double helix' also found in these entries (note: many are not synonyms or translations):
DNA - Watson-Crick model - complementary strand

Forum discussions with the word(s) "double helix" in the title:


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