What does autogeny mean?
Autogeny is a formal, relatively rare noun denoting the supposed process by which living organisms arise spontaneously from nonliving matter — the idea once known as spontaneous generation. From antiquity well into the nineteenth century, many naturalists believed that creatures such as maggots, eels, or even mice generated directly from decaying flesh, mud, or grain, and this doctrine was often called autogeny or autogenesis. Louis Pasteur's celebrated experiments of the mid-nineteenth century demonstrated instead that life comes only from existing life, consigning autogeny to the history of science. The word derives from Greek roots meaning 'self' and 'origin,' and by extension it can describe any process of generating or developing from within. Because its core sense has been scientifically superseded, autogeny today appears chiefly in scholarly discussions of intellectual history, philosophy of biology, and older scientific literature.
nounThe supposed origination of living organisms from nonliving matter; spontaneous generation. More broadly, the process of generating or developing from within oneself.
- The supposed production of living organisms from nonliving matter; spontaneous generation (chiefly historical in scientific use).
- Self-generation or development originating from within the organism itself.
"Nineteenth-century biologists still debated whether autogeny could explain the maggots that seemed to appear in decaying meat."
"Aristotle accepted a form of autogeny, holding that eels arose spontaneously from mud."
"In his system, the organism's growth was a matter of autogeny rather than external shaping."
Rarely pluralized; typically treated as an uncountable abstract noun referring to a single process or doctrine.
"Different authors proposed rival autogenies to explain the appearance of life in putrefying matter."
For centuries scientists believed life simply sprang from mud and rotting meat — autogeny was the word for that idea, until Pasteur's swan-necked flasks killed it off for good.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of autogeny
Autogeny comes from Greek elements: 'autos,' meaning 'self,' combined with '-geny,' from 'genesis,' meaning 'origin' or 'production.' It entered English in the nineteenth century as a learned term in debates over spontaneous generation, alongside its synonym 'autogenesis.' The same Greek root gives English a wide family of words including genesis, generate, genetics, and genealogy.
Related word forms
How autogeny is actually used
Formal and rare; encountered mainly in history-of-science writing, philosophy, and older biology texts. In modern science the concept it names was discredited by Louis Pasteur's experiments in the 19th century, so the word carries a distinctly historical flavor.
Easily confused with autogeny
Ontogeny is the biological development of an individual organism from embryo to adult, whereas autogeny refers to the supposed arising of life directly from nonliving matter.
Autogenous is an adjective meaning self-produced or originating from within, while autogeny is the noun naming the process itself.