Isochromosome is a term used in genetics to describe a chromosome with two identical arms, resulting from a duplication of one arm and loss of the other. Some synonyms for the term include monotely, isodicentric chromosome, idic, bicentric chromosome, and homocentric chromosome. These terms all refer to the same genetic anomaly but may be used in different contexts. For example, isodicentric chromosome is often used to describe a specific type of isochromosome that has a centromere at both ends. Having several synonyms for a scientific term can be helpful for researchers to communicate their findings, especially when publishing scientific papers or discussing research at conferences.