In Jainism, the term "sāgaropama" (sometimes spelled as "sagaropam" or "sāgarasama") is used to describe an extremely large measure of time. It is not a standard unit like a year, but rather a figurative expression used in Jain scriptures to convey the vastness of cosmic time.

One sāgaropama (सागरोपम) is defined as the time it would take to empty a huge tank of water measuring 1 yojana long, 1 yojana wide, and 1 yojana deep (a yojana is a traditional unit of distance, roughly 12-15 km), if one takes out a single drop of water every 100 years. The time taken to empty this tank completely, drop by drop, is called one sāgaropama.

To express this in years:

• The number of drops in the tank is considered astronomically large.
• Jain texts give an approximate value for one sāgaropama as 10¹⁴⁰ years (1 followed by 140 zeros).

So, 1 sāgaropama = 10¹⁴⁰ years (according to Jain scriptures and commentaries).

This is a symbolic way to denote an almost incomprehensible length of time, used especially when describing the duration of cycles (kalachakra) in Jain cosmology.