吸きゅう熱ねつ反はん応のうきゅうねつはんのうMeanings1nounendothermic reactionchemistry›Chemistry term for a reaction that absorbs heat from its surroundings. Antonym: 発熱反応 (exothermic reaction).Antonyms: 発熱反応 (はつねつはんのう)光こう合ごう成せいは