交大 Traditional form: 交大 Pinyin (reading): Jiāodà Definitions: Jiaotong University University of Communications abbr. of 交通大學/交通大学 ( Jiāotōng Dàxué) Characters: 交 - to connect; to deliver, to exchange; to intersect; to mix 大 - big, great, vast, high, deep Traditional characters: 交 - to connect; to deliver, to exchange; to intersect; to mix 大 - big, great, vast, high, deep