Go to MSN Homeencarta®
Dictionary
Find
in
Dictionary
Thesaurus
Translations
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Click to move up the list of words
orthomorphic
orthopaedic
orthopaedics
orthopedic
orthopedics
orthophosphate
orthophosphoric acid
orthopsychiatry
orthopteran
orthopterous
orthoptics
orthopyroxene
orthorhombic
orthoscopic
orthostatic
orthotics
orthotropic
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