併合へいごう Common Noun Irregular Transitive Intransitive English jmdict 1 noun (common) (futsuumeishi) noun or participle which takes the aux. verb suru transitive verb intransitive verb merger;joining into one;amalgamation;melding;merging;annexation;absorption その帝国はすべての小国を併合した。 The empire absorbed all the small states.