assibilation - the development of a consonant phoneme into a sibilant

deepening - a process of becoming deeper and more profound

growth - a progression from simpler to more complex forms; "the growth of culture"

process - a sustained phenomenon or one marked by gradual changes through a series of states; "events now in process"; "the process of calcification begins later for boys than for girls"

unfolding, flowering - a developmental process; "the flowering of ante-bellum culture"

Scopes trial - a highly publicized trial in 1925 when John Thomas Scopes violated a Tennessee state law by teaching evolution in high school; Scopes was prosecuted by William Jennings Bryan and defended by Clarence Darrow; Scopes was convicted but the verdict was later reversed

biological science, biology - the science that studies living organisms

anamorphism, anamorphosis - the evolution of one type of organism from another by a long series of gradual changes

anthropogenesis, anthropogeny - the evolution or genesis of the human race

emergent evolution - the appearance of entirely new properties at certain critical stages in the course of evolution

macroevolution - evolution on a large scale extending over geologic era and resulting in the formation of new taxonomic groups

microevolution - evolution resulting from small specific genetic changes that can lead to a new subspecies

biological process, organic process - a process occurring in living organisms

speciation - the evolution of a biological species