Meaning of episome

ep•i•some

Pronunciation: (ep'u-sōm"), [key]
— n. Genetics.
  1. bacterial DNA that is extrachromosomal and that may replicate autonomously as a plasmid or become incorporated into the chromosome and replicate with it.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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