double helix

noun

Definition of double helix

: a helix or spiral consisting of two strands in the surface of a cylinder that coil around its axis; especially : the structural arrangement of DNA in space that consists of paired polynucleotide strands stabilized by cross-links between purine and pyrimidine bases — compare alpha-helix, watson-crick model

double-helical

play \-ˈhe-li-kəl, -ˈhē-\ adjective

Recent Examples of double helix from the Web

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First Known Use of double helix

1954


DOUBLE HELIX Defined for English Language Learners

double helix

noun

Definition of double helix for English Language Learners

  • : the shape formed by two parallel lines that twist around each other


Medical Dictionary

double helix

noun

medical Definition of double helix

: a helix or spiral consisting of two strands in the surface of a cylinder that coil around its axis; especially : the structural arrangement of DNA in space that consists of paired polynucleotide strands stabilized by cross-links between purine and pyrimidine bases — compare alpha-helix, watson-crick model

double-helical

play \-ˈhel-i-kəl, -ˈhē-li-\ adjective

Illustration of double helix


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