Word origin · etymology
Sanskrit calendrical compound.
Yoga comes from yuj, to join or yoke. Here joining refers to the calendrical combination of the Sun's and Moon's longitudes.
Monier-Williams Sanskrit-English Dictionary: yoga (University of Hyderabad) ↗
How we know · epistemology
Traditional angular combination
Adding the selected sidereal Sun and Moon longitudes gives a reproducible sector index. That sum is a calendrical construction, not a measured interaction, and its interpretation differs from other Indian uses of the word yoga.
Connected concepts
Terms used in this explanation
These links connect subjects and terminology. They do not establish a shared historical origin.
Sources & provenance
Use the citations beside each section to distinguish a calculation convention, a historical teaching and an editorial example.