高祖父 Traditional form: 高祖父 Pinyin (reading): gāozǔfù Definitions: great-great-grandfather Characters: 高 - tall, lofty; high, elevated 祖 - ancestor, forefather; grandfather; surname 父 - father, dad Traditional characters: 高 - tall, lofty; high, elevated 祖 - ancestor, forefather; grandfather; surname 父 - father, dad