(三祗百大劫) The period necessary for a bodhisattva to become a Buddha, i.e. three asaṃkhyeyas 阿僧祗 to attain the 六度, and 100 kalpas to acquire the thirty-two 相 or characteristic marks of a Buddha; cf. 三阿.

A Dictionary of Chinese Buddhist Terms, William Edward Soothill and Lewis Hodous