isothermal
Unchanging temperature throughout
Isothermal describes a process or condition occurring at constant temperature.
In thermodynamics, an isothermal expansion or compression maintains the same temperature throughout: The gas underwent isothermal compression.
On weather maps, isothermal lines connect points of equal temperature.
The term applies wherever temperature uniformity matters—industrial processes, scientific experiments, or climate data.
Thermodynamic total heat quantity
- entropyQuantified chaos in systems
- heatTransferred thermal energy
- calorimetryMeasuring heat in reactions
- isobaricHaving uniform pressure
reversible · irreversible · compression · expansion · work · temperature
Bounding line of shape
- lineContinuous mark or queue
- chartData shown visually
- weatherAtmospheric state outdoors
- temperatureMeasured heat intensity
gradient · elevation · topography · cartography · meteorological · surface · plotting · interval
Cannot be made smaller
- compressibleCapable of being condensed
- steadyFixed, not fluctuating
- flowUnbroken forward movement
- viscousThick and slow-flowing
inviscid · laminar · turbulent · Newtonian · homogeneous · pipe · duct · coolant
Forcing into smaller space
- expansionIncrease in scope
- cylinderCircular-based solid form
- pistonReciprocating cylinder component
- reservoirLarge water storage basin
work · slow · equilibrium · ideal · constant · maintained · regulated · controlled
Gaseous layer around planets
- stratosphereSecond atmospheric layer up
- troposphereLowest atmospheric layer
- inversionReversal of position
- altitudeMeasured height above reference
zone · boundary · transition · gradient · vertical · profile · stable · uniform
enthalpy
Thermodynamic total heat quantity
- entropyQuantified chaos in systems
- heatTransferred thermal energy
- calorimetryMeasuring heat in reactions
isobaric · reversible · irreversible · compression · expansion · work · temperature
contour
Bounding line of shape
temperature · gradient · elevation · topography · cartography · meteorological · surface · plotting · interval · distribution
incompressible
Cannot be made smaller
- compressibleCapable of being condensed
- steadyFixed, not fluctuating
- flowUnbroken forward movement
viscous · inviscid · laminar · turbulent · Newtonian · homogeneous · pipe · duct · coolant · lubrication
compression
Forcing into smaller space
reservoir · work · slow · equilibrium · ideal · constant · maintained · regulated · controlled
atmosphere
Gaseous layer around planets
- stratosphereSecond atmospheric layer up
- troposphereLowest atmospheric layer
- inversionReversal of position
altitude · zone · boundary · transition · gradient · vertical · profile · stable · uniform
- thermodynamicsentropy, enthalpy, heat transfer, free energy, heat capacity
- gas physicsideal gas law, Boyle's law, Avogadro's law, gas laws, kinetic theory
- thermo- wordsthermos, thermocouple, thermophile, thermolysis, thermosphere
- chromatographychromatography, chromatogram, TLC, SEC, columns
- statistical mechanicsentropy, phase transition, critical point, fluctuations, free energy
- Lake Temperaturethermocline, stratification, warm layer, cooling rate