[double helix] n (1954): a helix or spiral consisting of two strands in the surface of a cylinder that coil around its axis; esp: 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 -- dou.ble-he.li.cal adj
DOUBLE HELIX
Meaning of DOUBLE HELIX in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012