介かい在ざい配はい列れつかいざいはいれつMeanings1nounintronTechnical term in molecular biology for a non-coding segment of DNA that is removed during RNA splicing. Compare with イントロン, the more common katakana loanword.See also: イントロン真しん核かく生せい物ぶつの遺い伝でん子しには介かい在