exothermic

Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

exothermic

[ek″so-ther´mik]

marked or accompanied by the evolution of heat; liberating heat or energy.

ex·o·ther·mic

(ek'sō-ther'mik),

1. Denoting a chemical reaction during which heat (that is, enthalpy) is emitted. Compare: endothermic.

2. Relating to the external warmth of the body.

[exo- + G. thermē, heat]

Farlex Partner Medical Dictionary © Farlex 2012

ex·o·ther·mic

(eks'ō-thĕr'mik)

1. Denoting a chemical reaction during which heat (i.e., enthalpy) is emitted.
Compare: endothermic

2. Relating to the external warmth of the body.

[exo- + G. thermē, heat]

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

Mentioned in ?

References in periodicals archive ?

The exothermic band of AP containing complexes 1-3 showed multiple broad and flat peaks, suggesting a complicated mechanism of decomposition.

A New Family of Energetic Complexes Constructed From Alkali Metals (K, Rb and Cs) and 7-Amino-4,6-dinitrobenzofuroxan: Crystal Structures, Thermal Decomposition Behaviors, Sensitivity and Catalytic Properties

It is well explained by the results of the previous hydration heat that the five kinds of esters make the cement hydration induction end time longer and postpone the second exothermic peak, that is, the esters have a delayed effect on the hydration reaction rate at the early stage of cement (hydration induction period and the acceleration period).

Influence of Organic Esters on Portland Cement Hydration and Hardening

The calculated activation energy for the shown exothermic events, according to the standard ASTM E698-11[17], were obtained using the angular coefficients values with support of Arrhenius equation [19].

Structural and Magnetic Characterization of Nanostructured Iron Acetate

In contrast, exothermic peak temperatures of the studied kaolins were lower than those for Makoro and Kgwakgwe.

Fourier transform infrared spectroscopy and thermal analyses of kaolinitic clays from South Africa and Cameroon

So upon AN thermolysis in the cuvette of 5 mm in diameter at the temperature range 280.350[degrees]C the signal of measuring thermocouple detects mainly endothermic processes corresponding to reactions (4) and (6), showing almost no exothermic processes implemented in the gas phase.

Influence of nitrogen dioxide on the thermal decomposition of ammonium nitrate

The OZSBO/pMDI resins with eq-MRs of 1:0.5, 1:0.75, and 1:1 exhibited exothermic reactions at 150[degrees]C, eqMRs of 1:2 and 1:3 showed exothermic peaks at 185[degrees]C, and an eq-MR of 1:4 presented an exothermic peak at 180[degrees]C.

Properties of ozonized soybean oil/polymeric methylene-diphenyl-4, 4'-diisocyanate adhesives and their adhesion performance for wood

This would then be followed by an exothermic step involving the expulsion of an activated ion, [CHS-HA.sup.+n*] [right arrow] CHS-H + [A.sup.+n*], followed by the line emission from the cation, [A.sup.+n*], [A.sup.+n*] [right arrow] [A.sup.+] + hv.

The liquid metallic hydrogen model of the sun and the solar atmosphere VIII. 'Futile' processes in the chromosphere

We observe from Figures 4 and 5 that velocity and temperature profiles increase with the increasing values of [lambda] for exothermic reaction, but opposite effects are found in these figures for endothermic reaction.

Effects of exothermic/endothermic chemical reactions with Arrhenius activation energy on MHD free convection and mass transfer flow in presence of thermal radiation

[ILLUSTRATION OMITTED] Exothermic Shampoo Ingredients: % Wt.

Novel cosmetic formulas for your consideration

The mini-riser products use ASK's Exactcast coldbox technology, which replaces the sand-based exothermic formulation with an insulating mix of low density refractory material, reducing riser weight by 75%.