noun Biochemistry.
- any of a group of enzymes that degrade DNA or RNA molecules by breaking linkages within the polynucleotide chains.
noun
- an enzyme that is responsible for scission of a nucleic acid chain, the action of which is not confined to the terminal nucleotideCompare exonuclease
n.
- Any of a group of enzymes that catalyze the hydrolysis of phosphodiester bonds between nucleic acids in a DNA molecule or RNA sequence.