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double dribble
double Dutch
double-duty
double-dyed
double eagle
double-edged
double-edged sword
double effect
double entendre
double entry
double exposure
double-faced
double fault
double-fault
double feature
double figures
double first
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double helix

dou·ble he·lix (plural dou·ble hel·i·ces or dou·ble he·lix·es)


noun 
Definition:
 
double spiral structure of DNA: the molecular structure of DNA, consisting of a pair of polynucleotide strands connected by a series of hydrogen bonds and wound in opposing spirals

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