The term DNA HALF is a combination of two words, 'DNA' and 'HELIX'. DNA stands for deoxyribonucleic acid, which is a molecule that contains the genetic instructions used in the development and functioning of all known living organisms. The HELIX is a type of structure formed by a long chain of molecules that twist around each other like a spiral staircase. Together, these two words form the term DNA HALF, which refers to the double HELIX structure of DNA.