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[ek-struh-kroh-muh-soh-muh l] /ˌɛk strəˌkroʊ məˈsoʊ məl/

adjective, Genetics.
of or relating to DNA that exists outside the main chromosome and acts independently.


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  • Extrachromosomal element

    extrachromosomal element ex·tra·chro·mo·so·mal element (ěk’strə-krō’mə-sō’məl) n. See plasmid.

  • Extrachromosomal inheritance

    extrachromosomal inheritance n. Inheritance of traits through DNA that is not connected with the chromosomes but rather to DNA from organelles in the cell. Also called cytoplasmic inheritance.

  • Extracode

    [ek-struh-kohd] /ˈɛk strəˌkoʊd/ noun, Computers. 1. a system that allows new instructions to be added in software to simulate hardware functions.

  • Extra-condensed

    [ek-struh-kuh n-denst] /ˌɛk strə kənˈdɛnst/ adjective, Printing. 1. (of type) narrower than condensed type in proportion to its height.

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