Definition of minichromosome in English:

minichromosome

Pronunciation /ˌmɪnɪˈkrəʊməsəʊm/ /ˈmɪnɪˌkrəʊməsəʊm/

noun

Genetics
  • 1A nucleoprotein complex consisting of viral DNA and histones and other proteins, formed in cells infected with certain viruses (chiefly papovaviruses).

  • 2Any of various other small nucleoprotein structures, either naturally occurring (e.g. in certain bacteria and yeasts and in the fruit fly Drosophila melanogaster) or artificially constructed.

Origin

1970s. From mini- + chromosome.