拡張かくちょう Common Noun Irregular Transitive English jmdict 1 noun (common) (futsuumeishi) noun or participle which takes the aux. verb suru transitive verb expansion;extension;enlargement 学校の体育館が拡張された。 The school gymnasium was enlarged. 2 noun (common) (futsuumeishi) noun or participle which takes the aux. verb suru transitive verb computing escape;ESC