The property of a substance to absorb heat during a chemical reaction or physical process.

ऊष्मीयता

English Usage: The endothermicity of the reaction was evident as the temperature dropped significantly.

Hindi Usage: प्रतिक्रिया की ऊष्मीयता स्पष्ट थी क्योंकि तापमान काफी गिर गया।