zymogramhttp://www.oed.com/dictionary/zymogram_n%3Ftab%3Dmeaning_and_usezymogram, n.
First published 1986; not fully revised

zymogramnoun

Biochemistry and Genetics.
  1. 1957–
    A strip of electrophoretic medium showing enzymes separated by a technique such as zone electrophoresis.
    Stressed as ˈzymogram.
    1. 1957
      We propose the term zymogram to refer to strips in which the location of enzymes is demonstrated by histochemical methods.
      Hunter & Markert in Science 28 June 1295/2
    2. 1978
      The high degree of gene duplication in these species often confounds the genetic interpretation of zymograms. For example, how many loci code for an enzyme represented by a single electrophoretic band?
      Nature 2 March 77/2
    3. 1981
      Electro~focused zymograms display species and organ differences.
      Histochemistry vol. LXXIII. 311

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

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