zymodemehttp://www.oed.com/dictionary/zymodeme_n%3Ftab%3Dmeaning_and_usezymodeme, n.
First published 1993; not fully revised

zymodemenoun

Ecology.
  1. 1978–
    A closely related sub-population within one taxon, distinguished on the basis of the degree of similarity of certain enzymes.
    Stressed as ˈzymodeme.
    1. 1978
      Prefixes may be given to the term to designate the general grounds on which the deme is defined, e.g., serodeme, zymodeme... There is no certain implication of common ancestry for demes displaying similar characters.
      Bulletin World Health Organization vol. 56 471
    2. 1980
      There were three enzymically distinct groups of T [rypanosoma] cruzi stocks—which have been called zymodemes 1, 2 and 3. All three zymodemes were capable of causing acute disease in man.
      Transactions of Royal Society of Tropical Medicine & Hygiene vol. 74 222/1
    3. 1985
      The traditional view..has been blurred by the discovery in both wild and domestic animals in west Africa of trypanosomes with enzyme markers (zymodemes) identical with those of species infective for man.
      British Medical Journal 30 November 1524/2
    4. 1988
      The term ‘zymodeme’ has been used with two different meanings: first, to designate any isozyme variant..; and second, to describe ‘main’ variants.
      Evolution vol. 42 278/2

Originally published as part of the entry for zymo-, comb. form

zymo-, comb. form was first published in 1921; not fully revised.