asaṅkhyeya
One of many Sanskrit words signifying an extraordinarily long or infinitely long period of time.
The Abhidharmakośa states that an asaṅkhyeya is a period of time equal to 1 followed by 59 zeros, times the number of great kalpas. (For information of the length of a great kalpa, time.)
Chinese Terms
a阿僧祇