What does eurythermic mean?
Eurythermic describes an organism, species, or biological trait that can tolerate a wide range of temperatures. The word is especially useful in ecology, marine biology, and environmental science, where temperature can change sharply across habitats, seasons, or daily cycles. An eurythermic animal might endure both warm surface waters and much colder depths, while an eurythermic species may occupy environments with substantial thermal variation. The term describes broad tolerance, not a preference for extreme heat or cold; heat-loving organisms are more precisely called thermophilic. Eurythermic is also distinct from stenothermic, which refers to organisms or conditions confined to a relatively narrow temperature range. Although uncommon in everyday speech, the word expresses a precise ecological idea in a compact and memorable form.
adjectiveHaving the ability to tolerate a wide range of temperatures. Used chiefly of organisms, habitats, or biological characteristics.
- Having the ability to tolerate a wide range of temperatures.
"The eurythermic species survives in regions where temperatures fluctuate dramatically."
"The eurythermic organisms in the intertidal zone endure substantial changes in temperature with each tide."
"Researchers described the fish as eurythermic because it tolerated both warm shallow water and cold offshore conditions."
Eurythermic life is built for thermal variety: it can withstand the heat of one environment and the chill of another without losing its footing.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does eurythermic come from?
Eurythermic was formed from the combining form eury-, from Greek eury meaning “wide” or “broad,” and thermic, relating to heat or temperature, ultimately from Greek thermē, “heat.” The compound entered English as a scientific term for the ability to withstand a wide range of temperatures. Its close English relatives include eurythermal and eurythermy, while thermic and therm preserve the underlying Greek element concerning heat.
Related word forms
How eurythermic is actually used
This is a formal scientific term, especially common in biology, ecology, and marine science. It describes tolerance of temperature variation rather than a preference for heat, as terms such as thermophilic do.