Peroxiredoxins are important antioxidant enzymes that protect cells from oxidative stress by reducing peroxides. There are several synonyms for peroxiredoxin, including thioredoxin peroxidase, peroxiredoxin-SO2, and alkyl hydroperoxide reductase. These names refer to the different isoforms of the enzyme found in different cellular compartments, as well as their ability to reduce various types of peroxides. Other synonyms for peroxiredoxin include peroxiredoxin-5, peroxiredoxin-3, and peroxiredoxin-1, which are specific isoforms found in different tissues and cell types. Understanding the different synonyms for peroxiredoxin is important for studying their functions in various biological contexts and developing targeted therapies for related diseases.