This is the RYI Dictionary content as presented on the site http://rywiki.tsadra.org/, which is being changed fundamentally and will become hard to use within the GoldenDict application. If you are using GoldenDict, please either download and import the rydic2003 file from DigitalTibetan (WayBack Machine version as the site was shut down in November 2021).
Or go directly to http://rywiki.tsadra.org/ for more upcoming features.
Three incalculable aeons. Incalculable refers to the number ten followed by 52 zeros. three "uncountable/ innumerable" aeons [RY]
three "uncountable/ innumerable" kalpas [IW]