Go to MSN Homeencarta®
Dictionary
Find
in
Dictionary
Thesaurus
Translations
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Click to move up the list of words
Orphic
Orphism
orphrey
orpiment
orpine
Orpington
orrery
orris
orrisroot
ort
ortanique
orth.
ortho-
orthocenter
orthochromatic
orthoclase
orthodontics
Click to move down the list of words
Also available:

World English Dictionary
Dictionnaire Français

orthogenesis
or·tho·gen·e·sis [ àwrthō jénnəssiss ]


noun 
Definition:
 
theory of evolution: an obsolete theory that evolution can proceed in a direction determined by internal genetic factors rather than the external forces of natural selection

or·tho·ge·net·ic [ àwrthō jə néttik ] adjective
or·tho·ge·net·i·cal·ly [ àwrthō jə néttikəlee ] adverb
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
Advertisement
© 2009 Microsoft