偶联反应 ǒuliánfǎnyìng coupling reaction Origin Definitions Defs Strokes Stroke Words Sentences Sents 偶 ǒu noun even (bound form) even-numbered; in pairs联 聯 lián nounproper noun to unite (bound form) to ally oneself with; to unite; to join or combine; to form an alliance or union with others反应 反應 fǎnyìng nounverb chemical reaction a process in which substances undergo chemical or physical change