nucleic acid

A nucleic acid is a macromolecule composed of nucleotide chains. In biochemistry these molecules carry genetic information or form structures within cells. The most common nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). Nucleic acids are universal in living things, as they are found in all cells. They are also found in viruses.
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Nucleic acid /nu·cle·ic ac·id/ a high-molecular-weight nucleotide polymer. There are two types: deoxyribonucleic acid and ribonucleic acid. [more]Nucleic acid - Community and Resources

Noun
1. (biochemistry) any of various macromolecules composed of nucleotid chains that are vital constituents of all living cells
(hypernym) macromolecule, supermolecule
(part-holonym) deoxyribonucleic acid, desoxyribonucleic acid, DNA
(classification) biochemistry

DNA or RNA.

A polymer made of repeating nucleotides . Examples are DNA and RNA .