希き釈しゃく熱ねつきしゃくねつMeanings1nounheat of dilutionTechnical term in chemistry and thermodynamics for the heat change when a solution is diluted.希き釈しゃく熱ねつは溶よう液えきの濃のう度ど変へん化かに伴ともなうエンタルピー変へん化かである。The heat of dilution is the enthalpy change accompanying a change in the concentration of a solution.