The word “chiasm” refers to a structural pattern in which elements are arranged in a mirrored or inverted order. It is often used in literature and poetry to describe a stylistic device where concepts or phrases are presented in a symmetrical format, typically in the form of an A-B-B-A arrangement. In biology, “chiasm” can also refer to the point where two chromosomes exchange genetic material during meiosis, known as a chiasmata. The term is derived from the Greek letter “chi” (?), which resembles the crossing pattern described.
