the center in a reaction, especially in photosynthesis where light energy is converted into chemical energy.

a point at which a reaction occurs, often used in a scientific context.

एक बिंदु जहाँ प्रतिक्रिया होती है

English Usage: At the reaction centre of the experiment, we measured the temperature changes.

Hindi Usage: प्रयोग के प्रतिक्रिया केंद्र पर, हमने तापमान में बदलाव मापा।