4 levels of concentration

Four levels of concentration:
1. Momentary or transient concentration (khanika-samadhi)
2. Preliminary or preparing concentration (parikamma-samadh)
3. Access or approaching concentration (upacara-samadhi)
4. Absorption or attainment concentration (appana-samadhi)
==References==
*The Complete Book of Buddha's Lists -- Explained. David N. Snyder, Ph.D., 2006.
*http://www.thedhamma.com/
Category:Buddha's Lists