Meaning of intron

in•tron

Pronunciation: (in'tron), [key]
— n. Genetics.
  1. a noncoding segment in a length of DNA that interrupts a gene-coding sequence or nontranslated sequence, the corresponding segment being removed from the RNA copy before transcription. Also calledCf. exon.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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