endoergisesti

Endoergisesti is a Hungarian adverb used in science to describe a process that absorbs energy from its surroundings, i.e., endothermically. The term is formed from endo- (within), erg- (energy/work), and -isesti (adverbial suffix). In thermodynamics, endothermic processes have a positive enthalpy change (ΔH > 0) and require an input of energy for the reaction or phase change to proceed. The absorbed energy can come from heat, light, electricity, or other external sources. Endoergically processes are contrasted with exoergically processes, which release energy to the surroundings (ΔH < 0).

Common examples include the melting of ice, sublimation of solid carbon dioxide, and the evaporation of water, all of which proceed with energy uptake from the surroundings. In biology and chemistry, photosynthesis is a well-known endothermic process where light energy is stored as chemical energy. Some dissolution reactions—such as dissolving ammonium nitrate in water—are also endothermic, causing a temperature drop in the solution.

In practice, endoergisesti is used to describe reaction energetics in texts, lectures, and laboratory notes. Determining whether a process is endothermic typically involves calorimetric measurements to quantify the enthalpy change. Understanding endoergisesti helps explain why certain reactions require heating or energy input to occur and how energy balance influences reaction feasibility and rates.