Satsang (सत्संग)
Mental association with a Saint that purifies the mind; also used for gatherings devoted to group sadhana.
Satsang (सत्संग | satsaṁga) means association with a Saint that purifies the mind.
Sat means Saint, and sang means association. When a jeev mentally associates with a Saint, it is called satsang.
In common usage, satsang also refers to a gathering where people come together to perform group sadhana.
Also written as: Satsanga
Reference
Prema Rasa Siddhanta — Philosophy of Divine Love, Chapter 14Prema Rasa Siddhanta - Philosophy of Divine Love, Ch. 14