1. Term given by Huxley to the principle that life originates from preexisting life only and never from nonliving material.
2. The principle that a living organism can only originate from a living organism similar to itself.
The information shown above for biogenesis is provided by Stedman's.
* Stedman's, part of Lippincott Williams & Wilkins, provide a comprehensive line of health-science publications for healthcare professionals and medical students.