Meaning of epigenetic in English:


Pronunciation /ˌɛpɪdʒɪˈnɛtɪk/


  • 1Biology
    Relating to changes, especially heritable changes, in the characteristics of a cell or organism that result from altered gene expression or other effects not involving changes to the DNA sequence itself.

    ‘epigenetic carcinogens’
    • ‘Such variations might arise from minor genetic differences or by epigenetic influences causing induction, enhancement or inhibition of repair enzyme synthesis or activity.’
    • ‘The embryo is human, since it has the genetic constitution and epigenetic primordia characteristic of human beings.’
    • ‘Hence, we investigated molecular genetic and epigenetic events in oral carcinogenesis.’
    • ‘However, backcrossing is a gradual procedure that, apart from being lengthy, cannot ascertain that genetic and epigenetic changes will modify the original nuclear genotype.’
    • ‘There are epigenetic influences at work (changes in inheritance by means other than changing DNA sequence,) and we're just barely starting to understand them.’
    1. 1.1Relating to or of the nature of epigenesis.
  • 2Geology
    Formed later than the surrounding or underlying rock formation.

    ‘Ores formed at the same time as their host rocks are referred to as syngenetic; ores formed after the host rock are called epigenetic.’
    • ‘Thus, the ore minerals form after the host rock and are called epigenetic.’
    • ‘More recent studies suggest an epigenetic origin, indicating that sulphide-rich iron formation is a replacement type rather than a primary sedimentary facies.’
    • ‘The metamorphic rocks along the northwest margin of the Reading Prong, as well as the adjacent Paleozoic carbonates, contain epigenetic minerals deposited predominantly in open spaces.’
    • ‘A number of different theories are postulated for the formation of the copper deposits, but all generally agree that the deposits are epigenetic and that the ore-bearing solutions were hydrothermal.’