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1. Of, relating to, or indicating equal or constant temperatures.
2. Of or designating changes of pressure and volume at constant temperature.
3. Of or relating to an isotherm.
An isotherm.


1. (General Physics) (of a process or change) taking place at constant temperature
2. (Physical Geography) of or relating to an isotherm
(Physical Geography) another word for isotherm
ˌisoˈthermally adv


(ˌaɪ səˈθɜr məl)

also i`so•ther′mic,

1. occurring at constant temperature.
2. pertaining to an isotherm.
[1820–30; < French isotherme isotherm]
i`so•ther′mal•ly, adv.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.isothermal - of a process or change taking place at constant temperature
equal - having the same quantity, value, or measure as another; "on equal terms"; "all men are equal before the law"


[ˌaɪsəʊˈθɜːməl] ADJisotérmico
References in periodicals archive ?
This reaction proceeds isothermally to completion at fixed temperature, and the transformed materials generally do not undergo substantial changes in shape.
Therefore iPP is often considered as a suitable prototype to study the structure/properties relationship of semi-crystallized polymers and has received much attention in decades [21-26], Song and Nemoto applied an interpenetrating network model to illustrate the necking in microcrystalline region in isothermally crystallized isotactic polypropylene film subjected to uniaxial stretching at room temperature.
Analysis was carried out isothermally at column oven temperature of 170 [degrees]C, column inlet and detector oven temperatures of 180 [degrees]C and the carrier gas flow rate was 50 mL/ min.
Fig 3(a) shows XRD pattern of 304 steel isothermally oxidized with and without coating at 650[degrees] C for 100 hrs.
Correlation of metallurgical analysis & higher harmonic ultrasonic response for long term isothermally aged and crept FM steel for USC TPP turbine rotors, NDT&E Int.
The data are produced isothermally at three temperatures representing the process range of the test rubber.
Oven temperature was kept at 50[degrees]C for 2 min, programmed to 110[degrees]C at a rate of 2[degrees]C/min and held isothermally for 3 min; then programmed to 175[degrees]C at a rate of 4[degrees]C/min and held isothermally for 2 min; programmed to 250[degrees]C at a rate of 5[degrees]C/min and held isothermally for 5 min.
The sample was adsorbed and desorbed isothermally at 22 pressure points.
Criteria for the break-up of thin liquid layers flowing isothermally over solid surface, Int.
For the DSC experiments, samples were heated to 90[degrees]C and held isothermally for 10 min.
5% TGA temperature increased stepwise at a rate of 5[degrees]C/min and maintained isothermally at 50[degrees]C for 240 min.
The hot gas then travels through each pipe, carrying heat isothermally throughout the pipe to be cooled by the heatsink, and allowing the entire volume of the heatsink to more efficiently dissipate heat.