subthermaladj.

Brit.

/ˌsʌbˈθəːml/, U.S.

/ˌsəbˈθərm(ə)l/

Origin: Formed within English, by derivation. Etymons: sub- prefix, thermal adj.

Etymology: < sub- prefix + thermal adj.

†1. Designating a line of altitude slightly below the frost line. Obsolete. rare.

ΚΠ

1861 Trans. Wisconsin State Agric. Soc. 1860 6 406 An altitude that reaches the thermal line, or even a sub-thermal, is a great desideratum in fruit-growing any where.

2. Of water: somewhat cooler than normal body temperature; (Medicine) designating a bath or other treatment in which patients are exposed to water that is cooler than body temperature (now rare).

ΚΠ

1899 C. Watson Encycl. Medica I. 435 Subthermal baths have a very large place in spa treatment. They usually exert both sedative and stimulating influence.

1917 R. F. Fox Physical Remedies Disabled Soldiers iii. 43 Another method which may be useful in cases with high temperature and nervous disturbance is the prolonged sub-thermal bath.

1950 Brit. Jrnl. Physical Med. 13 17/1 Mineral waters are either cold, subthermal or thermal.

1997 T. Eisenlohr et al. in C. Schindler et al. Active Tectonics Northwestern Anatolia 231 The springs can be divided into the following groups: cold springs (<17°C), sub-thermal springs (17–25°C) and thermal springs (>25°C).

3. Physics. Of a particle, esp. a neutron or electron: having less energy than would be possessed by a particle in thermal equilibrium with its environment. Of energy, etc.: below that associated with thermal equilibrium.

ΚΠ

1947 Physical Rev. 72 1149/1 In order to increase the number of subthermal neutrons the paraffin source was cooled to liquid air temperature.

1976 Philos. Trans. (Royal Soc.) A. 281 513 The efficiency of the acceleration process depends on the initial electron energy (electrons with subthermal velocities are difficult to accelerate).

1980 P. A. E. Stewart in D. A. Garrett & D. A. Bracher Real-time Radiologic Imaging 182 Cold (or subthermal), thermal, epithermal, and fast neutrons may be used for radiography.

2009 Radiation Physics & Chem. 78 313/1 The total cross section for Europium is on the order of 5 barn at 14MeV, and is as high as 50,000 barn at sub-thermal energy.

This entry has been updated (OED Third Edition, June 2012; most recently modified version published online March 2022).

单词	subthermal
释义	subthermaladj. Brit. /ˌsʌbˈθəːml/, U.S. /ˌsəbˈθərm(ə)l/ Origin: Formed within English, by derivation. Etymons: sub- prefix, thermal adj. Etymology: < sub- prefix + thermal adj. †1. Designating a line of altitude slightly below the frost line. Obsolete. rare. ΚΠ 1861 Trans. Wisconsin State Agric. Soc. 1860 6 406 An altitude that reaches the thermal line, or even a sub-thermal, is a great desideratum in fruit-growing any where. 2. Of water: somewhat cooler than normal body temperature; (Medicine) designating a bath or other treatment in which patients are exposed to water that is cooler than body temperature (now rare). ΚΠ 1899 C. Watson Encycl. Medica I. 435 Subthermal baths have a very large place in spa treatment. They usually exert both sedative and stimulating influence. 1917 R. F. Fox Physical Remedies Disabled Soldiers iii. 43 Another method which may be useful in cases with high temperature and nervous disturbance is the prolonged sub-thermal bath. 1950 Brit. Jrnl. Physical Med. 13 17/1 Mineral waters are either cold, subthermal or thermal. 1997 T. Eisenlohr et al. in C. Schindler et al. Active Tectonics Northwestern Anatolia 231 The springs can be divided into the following groups: cold springs (<17°C), sub-thermal springs (17–25°C) and thermal springs (>25°C). 3. Physics. Of a particle, esp. a neutron or electron: having less energy than would be possessed by a particle in thermal equilibrium with its environment. Of energy, etc.: below that associated with thermal equilibrium. ΚΠ 1947 Physical Rev. 72 1149/1 In order to increase the number of subthermal neutrons the paraffin source was cooled to liquid air temperature. 1976 Philos. Trans. (Royal Soc.) A. 281 513 The efficiency of the acceleration process depends on the initial electron energy (electrons with subthermal velocities are difficult to accelerate). 1980 P. A. E. Stewart in D. A. Garrett & D. A. Bracher Real-time Radiologic Imaging 182 Cold (or subthermal), thermal, epithermal, and fast neutrons may be used for radiography. 2009 Radiation Physics & Chem. 78 313/1 The total cross section for Europium is on the order of 5 barn at 14MeV, and is as high as 50,000 barn at sub-thermal energy. This entry has been updated (OED Third Edition, June 2012; most recently modified version published online March 2022). < adj.1861
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