American Heritage® Dictionary of the English Language, Fourth Edition
- n. Biology The theory that an individual is developed by successive differentiation of an unstructured egg rather than by a simple enlarging of a preformed entity.
- n. Geology Change in the mineral content of a rock because of outside influences.
Century Dictionary and Cyclopedia
- n. The coming into being in the act or process of generation or reproduction; the theory or doctrine of generation in which the germ is held to be actually procreated by the parents, not simply expanded or unfolded or made to grow out of an ovum or spermatozoön in which it preëxisted or had been preformed. Thus, in its application to plants, this theory maintains that the embryo does not preëxist in either the ovary or the pollen, but is generated by the union of the fecundating principles of the male and female organs. In zoology the doctrine supplanted the theory of incasement (see
incasement), as held by both the animalculists and the ovulists, and may be considered to have itself “incased” the germ of all modern doctrines of ontogenetic biogeny, or evolution of the individual from preexisting individuals. The theory was promulgated in substance in 1759 by C. F. Wolff, and in a modified form, as above, is the doctrine now accepted.
- n. In geology, same as metamorphism.
- n. In pathology, an accessory symptom; a new symptom that does not indicate a change in the nature of a disease.
- n. biology The theory that an organism develops by differentiation from an unstructured egg rather than by simple enlarging of something preformed.
- n. geology changes in the mineral content of rock after its formation
GNU Webster's 1913
- n. (Biol.) The theory of generation which holds that the germ is created entirely new, not merely expanded, by the procreative power of the parents. It is opposed to the theory of
evolution, also to syngenesis.
- n. a geological change in the mineral content of rock after the rock has formed
- epi- + -genesis (Wiktionary)
“To-day we can scarcely call epigenesis a THEORY, because we are convinced it is a fact, and can demonstrate it at any moment with the aid of the microscope.”
“Its "epigenesis" is shown to be a literary example of the phases of cell division, with discussions of its prophase, metaphase, anaphase, and telophase.”
“This point established, two hypotheses remain: that of 'pre-existence' and that of 'epigenesis'.”
“epigenesis", viz., that the development of the embryo is real successive production of visible manifoldness, real construction of new parts, goes back to Aristotle.”
“(P. 163.) "The doctrine of 'epigenesis' is derived from Harvey: following by ocular inspection the development of the new being in the Windsor does, he saw each part appear successively, and taking the moment of”
“This literature shows that symbiogenesis, interspecific fusions (hybridogenesis, gene transfers of various types, karyotypic fissioning, and other forms of acquisition of "foreign genomes" or epigenesis) are more important than the slow gradual accumulation of mutation or sexual mergers.”
“However, as a decade of Bolivarian Revolution can witness, sane human cosmic existence covers our whole historic trajectory, the arduous revolutionary paths of our genesis, epigenesis and synthesis, from where we came, to where we are and to whither we are going.”
“Suzan Mazur: Then there's epigenesis, where a chemical layer is laid down on top of the genes resulting from various stresses on the organism, and the resulting traits (including disease) can be passed on without changes to the DNA.”
“If preformationism is all about blueprints, epigenesis is about something more like a recipe or a computer program.”
“The historical alternative to preformationism is epigenesis.”
These user-created lists contain the word ‘epigenesis’.
"Luciferous Logolepsy is a collection of over 9,000 obscure English words. Though the definition of an 'English' word might seem to be straightforward, it is not. There exist so many adopted, deriv...
Looking for tweets for epigenesis.