from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The theory that all living organisms are descended from a single cell or organism.
- n. Asexual reproduction, as by sporulation.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The theory that mankind originated with a single ancestor or ancestral couple.
- n. The theory that all languages, or a particular set of languages, originated from a single source.
- n. The emergence from a single cause.
from the GNU version of the Collaborative International Dictionary of English
- n. Oneness of origin; esp. (Biol.), development of all beings in the universe from a single cell; -- opposed to
polygenesis. Called also monism.
- n. That form of reproduction which requires but one parent, as in reproduction by fission or in the formation of buds, etc., which drop off and form new individuals; asexual reproduction.
- n. The direct development of an embryo, without metamorphosis, into an organism similar to the parent organism; -- opposed to
from The Century Dictionary and Cyclopedia
- n. In biology:
- n. Development of the ovum from a parent similar to itself: opposed to metagenesis.
- n. Generation of an individual from one parent which develops both male and female products, or ova and spermatozoa.
- n. Descent of all living things from a single cell.
- n. Origination or derivation from a single species, or, in a restricted sense, from a single pair. Contrasted with polygenesis (which see).
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. asexual reproduction by the production and release of spores
mono- + -genesis (Wiktionary)