also: ついごう
noun
synapsis
Biology term for the pairing of homologous chromosomes during meiosis.
See also: シナプシス
減数分裂の前期に対合が起こる。
Synapsis occurs during prophase of meiosis.
noun
Mathematics term for a function that is its own inverse.
対合は数学で、自分自身が逆関数となる写像を指す。
In mathematics, an involution refers to a mapping that is its own inverse.
Katakana loanword for synapsis; 対合 is the kanji-based term used in Japanese biology texts.
Compound of 対 (pair, opposite) and 合 (join, match). The exact historical derivation is uncertain; the term is used in modern scientific contexts for pairing or self-inverse concepts.