Chromosome deletion, a condition where a portion of a chromosome is missing or lost, can result in genetic disorders or abnormalities. Synonyms for chromosome deletion include monosomy, partial monosomy, deletion syndrome, and haploinsufficiency syndrome. Monosomy refers to the absence of one complete chromosome in a pair, while partial monosomy involves the deletion of only a part of a chromosome. Deletion syndrome typically refers to a specific genetic disorder resulting from a particular chromosome deletion. Haploinsufficiency syndrome occurs when the remaining genetic material on the affected chromosome is not enough to produce the necessary protein or functionality. Understanding the synonyms for chromosome deletion can aid in the diagnosis and treatment of genetic abnormalities.