from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The supposed development of living organisms from nonliving matter. Also called autogenesis, spontaneous generation.
from the GNU version of the Collaborative International Dictionary of English
- n. The supposed origination of living organisms from lifeless matter; such genesis as does not involve the action of living parents; spontaneous generation; -- called also abiogeny, and opposed to
from The Century Dictionary and Cyclopedia
- n. In biology, the production of living things otherwise than through the growth and development of detached portions of a parent organism; spontaneous generation.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a hypothetical organic phenomenon by which living organisms are created from nonliving matter
a- + bio- + genesis (Wiktionary)