'nucleotide' definitions:

Definition of 'nucleotide'

From: WordNet
noun
A phosphoric ester of a nucleoside; the basic structural unit of nucleic acids (DNA or RNA) [syn: nucleotide, base]

Definition of 'nucleotide'

From: GCIDE
  • nucleotide \nucleotide\ n. a phosphate ester of a nucleoside; one of the monomeric components of DNA or RNA. [WordNet 1.5 +PJC]