¹ Source: wiktionary.com
Definition of Introns
1. intron [n] - See also: intron
Medical Definition of Introns
1. Non-coding, intervening sequences of DNA that are transcribed, but are removed from within the primary gene transcript and rapidly degraded during maturation of messenger RNA. most genes in the nuclei of eukaryotes contain introns, as do mitochondrial and chloroplast genes. (12 Dec 1998)