Dictionary

orthogenesis

orthogenesis

noun or·tho·gen·e·sis \ˌr-thə-ˈje-nə-səs\

Definition of ORTHOGENESIS

:  variation of organisms in successive generations that in some especially former evolutionary theories takes place in some predestined direction resulting in progressive evolutionary trends independent of external factors
or·tho·ge·net·ic \-jə-ˈne-tik\ adjective
or·tho·ge·net·i·cal·ly \-ti-k(ə-)lē\ adverb

Origin of ORTHOGENESIS

New Latin
First Known Use: 1895

orthogenesis

noun or·tho·gen·e·sis \ˌr-thə-ˈjen-ə-səs\   (Medical Dictionary)
plural or·tho·gen·e·ses \-ˌsēz\

Medical Definition of ORTHOGENESIS

:  variation of organisms in successive generations that in some evolutionary theories takes place in some predestined direction and results in progressive evolutionary trends independent of external factors
or·tho·ge·net·ic \-jə-ˈnet-ik\ adjective

Browse

Next Word in the Dictionary: orthogenicPrevious Word in the Dictionary: orthoformic esterAll Words Near: orthogenesis
February 27, 2015
rationale Hear it
An explanation or underlying reason
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears