nucleotide

/N UW1 K L IY0 AH0 T AY0 D/
noun
  1. 1

    The monomer constituting DNA or RNA biopolymer molecules. Each nucleotide consists of a nitrogenous heterocyclic base (or nucleobase), which can be either a double-ringed purine or a single-ringed pyrimidine; a five-carbon pentose sugar (deoxyribose in DNA or ribose in RNA); and a phosphate group.

Source: https://en.wiktionary.org/wiki/nucleotide