We don't have synonyms for episomes yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are epitome, episode and episodes.
(n) :
(cytology) A segment of DNA that can exist and replicate either autonomously in the cytoplasm or as part of a chromosome, mainly found in bacteria.
(n) :
(cytology) A segment of DNA that can exist and replicate either autonomously in the cytoplasm or as part of a chromosome, mainly found in bacteria.