What does coevolution mean?
Coevolution is the process by which two or more species—or, by extension, other interacting systems—exert reciprocal selective pressure on one another, driving evolutionary change in both parties over time. Classic examples include flowering plants and their pollinators, predators and prey, hosts and parasites, where an adaptation in one partner prompts a counter-adaptation in the other, sometimes escalating into long-term 'evolutionary arms races.' The term originated in biology but has broadened to describe coupled development in fields such as anthropology (gene–culture coevolution) and technology studies, where innovations and user needs shape each other. Coevolution carries a neutral, scientific connotation and appears mainly in scholarly writing, though its vivid examples—orchids tailored to a single moth's proboscis, for instance—make it accessible to general audiences. It underscores a central insight of modern biology: organisms do not evolve in isolation, but within webs of interdependent relationships.
nounThe process by which two or more species, or other interacting entities such as genes or cultures, reciprocally influence each other's evolution over time.
- (biology) Reciprocal evolutionary change between two or more interacting species, as in predator–prey, host–parasite, or mutualistic relationships.
- By extension, reciprocal adaptive change between other interacting systems, such as genes and culture (gene–culture coevolution) or technologies and their users.
"The coevolution of flowering plants and their pollinators has produced some of nature's most intricate relationships."
"Coevolution between cheetahs and gazelles has driven both toward ever greater speeds over millennia."
"Scholars of gene–culture coevolution argue that dairying and lactose tolerance shaped each other's spread."
Rarely pluralized in practice; writers typically refer to instances or cases of coevolution rather than using a plural form.
"The paper surveyed several coevolutions among island plants and their pollinators."
Orchids and their pollinators have been locked in a millions-of-years-long arms race — so specific that some orchid flowers evolved to match a single moth's tongue length exactly.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of coevolution
Coevolution derives from Latin roots: 'co-' meaning 'together' and 'evolutio' from 'evolvere,' meaning 'to unroll' or 'unfold.' The term was formed in English by combining these elements with the prefix 'co-,' following the pattern of words like 'cooperation.' It emerged in the twentieth century alongside the modern synthesis of evolutionary biology, popularized especially by biologists studying ecological interactions such as Paul Ehrlich and Peter Raven's work on butterflies and plants in the 1960s. Its cognates share the Latin root 'volvere,' seen also in 'revolve' and 'involve.'
Related word forms
How coevolution is actually used
Primarily an academic term used in biology, ecology, anthropology, and related sciences; rarely heard in casual conversation. Often qualified by the pair of entities involved (e.g., 'host–parasite coevolution').
Easily confused with coevolution
Convergent evolution is when unrelated species independently evolve similar traits, whereas coevolution involves reciprocal evolutionary change driven by interaction between the same entities.