hot spring

a thermal spring having water warmer than 98°F (37°C): the water is usually heated by emanation from or passage near hot or molten rock.

Compare warm spring.

Origin of hot spring

First recorded in 1660–70

hot spring warm spring

Thought I, Garm-chashma (Hot-spring) is close by; they may have dismounted there.

The Bbur-nma in English |Babur, Emperor of Hindustan
Jimmy's soul was first of all a hot-spring of ambition; the evidences of which, when once recognized, were ever paramount.

The Law-Breakers and Other Stories |Robert Grant
The mass of hot-spring material built up here cannot be less than 400 feet in thickness.

Wonders of the Yellowstone |James Richardson
One of the streams we crossed soon after issued from a hot-spring.

In Darkest Africa, Vol. 2; or, The quest, rescue and retreat of Emin, governor of Equatoria |Henry Morton Stanley

The oxidation and neutralization of these hot-spring solutions near the surface throws out the mercury sulphide.

The Economic Aspect of Geology |C. K. Leith

hot spring

a natural spring of mineral water at a temperature of 21°C (70°F) or above, found in areas of volcanic activity Also called: thermal spring

hot spring

A spring of warm water, usually having a temperature greater than that of the human body.