(bskal pa, Skt. Kalpa). 1) World-age, period, cosmic cycle. 2) Cosmic period. 3) There are small aeons, intermediate aeons and big aeons. An intermediate aeon consists of two small aeons, and a big aeon consists of 80 intermediate aeons. 4) Aeon of Strife (rtsod dus) [LW1] [RY]