biochemistry A long linear polymer of nucleotides found in the nucleus but mainly in the cytoplasm of a cell where it is associated with microsomes; it transmits genetic information from DNA to the cytoplasm and controls certain chemical processes in the cell:
— Ribonucleic acid is the genetic material of some viruses.

synonym: RNA.

Dutch: ribonucleïnezuur, RNA
Polish: kwas rybonukleinowy, RNA