Definition of evolution
1 : one of a set of prescribed movements
2a : a process of change in a certain direction : unfoldingb : the action or an instance of forming and giving something off : emissionc (1) : a process of continuous change from a lower, simpler, or worse to a higher, more complex, or better state : growth (2) : a process of gradual and relatively peaceful social, political, and economic advanced : something evolved
3 : the process of working out or developing
4a : descent with modification from preexisting species : cumulative inherited change in a population of organisms through time leading to the appearance of new forms : the process by which new species or populations of living things develop from preexisting forms through successive generations Evolution is a process of continuous branching and diversification from common trunks. This pattern of irreversible separation gives life's history its basic directionality. — Stephen Jay Gould; also : the scientific theory explaining the appearance of new species and varieties through the action of various biological mechanisms (such as natural selection, genetic mutation or drift, and hybridization) Since 1950, developments in molecular biology have had a growing influence on the theory of evolution. — Nature In Darwinian evolution, the basic mechanism is genetic mutation, followed by selection of the organisms most likely to survive. — Pamela Weintraubb : the historical development of a biological group (such as a race or species) : phylogeny
5 : the extraction of a mathematical root
6 : a process in which the whole universe is a progression of interrelated phenomena
evolutionarilyplay \ˌe-və-ˈlü-shə-ˌner-ə-lē, ˌē-və-\ adverb
evolutionaryplay \ˌe-və-ˈlü-shə-ˌner-ē, ˌē-və-\ adjective
evolutionismplay \ˌe-və-ˈlü-shə-ˌni-zəm, ˌē-və-\ noun
evolutionistplay \ˌe-və-ˈlü-sh(ə-)nist, ˌē-və-\ noun or adjective
Examples of evolution in a sentence
changes brought about by evolution
an important step in the evolution of computers
Recent Examples of evolution from the web
Social media has been revolutionary in changing the access lexicographers have to the evolution of how words are used.
Fans say the elegiac videos, cut with bleak soundscapes and often presented without narration, are poignant meditations on urban evolution and decay.
A new study on killer whales, published on Thursday in Current Biology, suggests reproductive conflict between mothers and daughters may have played an important role in the evolution of menopause.
Urban environments can speed up the process of evolution.
Yet the retail sales report does point to a steady evolution of the U.S. economy.
Like many things with Mr. Obama, his evolution on climate was essentially an intellectual journey.
the book’s real focus is the subsequent evolution of the sport, in particular its more recent rise in the United States.
The big picture for Fitbit, Mr. Scal said, is its evolution into a digital monitoring platform to discover and prevent health problems.
These example sentences are collected from online sources. Help us improve them by sending feedback.
Origin and Etymology of evolution
Latin evolution-, evolutio unrolling, from evolvere
First Known Use: 1616
EVOLUTION Defined for Kids
Definition of evolution for Students
1 : the theory that the various kinds of existing animals and plants have come from kinds that existed in the past
2 : the process of development of an animal or a plant
Medical Definition of evolution
1: a process of change in a certain direction tumor evolution and progression—I. J. Fidler et al
2a: the historical development of a biological group (as a race or species) : phylogenyb: a theory that the various types of animals and plants have their origin in other preexisting types and that the distinguishable differences are due to modifications in successive generations
Seen and Heard
What made you want to look up evolution? Please tell us where you read or heard it (including the quote, if possible).