A restriction enzyme, also known as a restriction endonuclease, is a type of enzyme that cuts DNA molecules at specific locations called restriction sites. There are several synonyms for restriction enzyme such as molecular scissors, molecular scalpel, DNA cutter, and enzyme cutter. Molecular scissors is an appropriate synonym as the enzyme makes a cut in the double-stranded DNA molecule in a manner similar to scissors cutting through paper. Molecular scalpel is another suitable synonym since the enzyme precisely cuts or cleaves the DNA molecule at specific locations. DNA cutter is another synonym that describes how the enzyme precisely cuts DNA at specific sites. Finally, enzyme cutter is also another synonym that aptly describes the enzyme's ability to cut the DNA molecule at specific locations.