noun Etymology: New Latin Date: 1895 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, orthogenetic adjective orthogenetically adverb
ORTHOGENESIS
Meaning of ORTHOGENESIS in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012