1. enthalpy

noun. (thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure.


  • total heat
  • physical property
  • heat content


  • unmalleability
  • elasticity
  • malleability
  • audibility


  • ἐνθάλπω (Ancient Greek (to 1453))

Featured Games

Example sentences of the word enthalpy

1. Adjective
The enthalpy change of a reaction is the amount of heat absorbed or released as the reaction takes place, if it happens at a constant pressure.

2. Noun, singular or mass
It is important to note that enthalpy is not strictly a measure of heat but is related to pressure and volume, as you can see in the formula below.

3. Adverb
Answer: First, write out your equation: Tf = Ti - ( Reaction enthalpy / ( (heat capacity of contents) x (mass of contents) + (Calorimeter constant) ) )