Shirabe
凸 集合
Common Noun Irregular Intransitive
English jmdict
1
noun (common) (futsuumeishi)noun or participle which takes the aux. verb suruintransitive verb meeting up;gathering;assembly
The captain ordered his men to gather at once.
2
noun (common) (futsuumeishi)noun or participle which takes the aux. verb suruintransitive verb mathematics set