Translocation means a change in location. It often refers to genetics, when part of a chromosome is transferred to another chromosome. Chromosomes are structures that carry genes, our units of heredity. When a translocation occurs, it can cause flaws in chromosomes.
In another type of translocation, two chromosomes trade pieces with each other.
Genetic translocations can cause serious disorders, including a type of leukemia.
Kumar V, Abbas AK, Aster JC. Neoplasia. In: Kumar V, Abbas AK, Aster JC, eds. Robbins & Cotran Pathologic Basis of Disease. 10th ed. Philadelphia, PA: Elsevier; 2021:chap 7.