Origin of nucleotide
Related formsin·ter·nu·cle·o·tide, adjective
British Dictionary definitions for nucleotides
Word Origin for nucleotide
Medicine definitions for nucleotides
Science definitions for nucleotides
Culture definitions for nucleotides
The molecules that form the basic modular structure of the double helix of the DNA molecule. A nucleotide consists of three molecules — a sugar, a phosphate group, and a molecule called a base. If the double helix is a twisted ladder, the sugar and phosphates form the sides of the ladder and pairs of bases form the rungs. There are four different bases, usually abbreviated A, C, G, and T for adenine, cytosine, guanine, and thymine). The order of bases in DNA determines the genetic code.