समता Samatha, literally "equanimity, sameness, impartiality."
In Tibetan Buddism, shamatha is tranquility meditation, and is accompanied by vipasyana, special insight.
Sha in Sanskrit means “peace.” Mata means “dwelling” or “stability.” Samatha means “to dwell or to be founded, to have establishment in peace, to dwell in peace.” The term Shamata is related to the Tibetan shi-ne which means “peace.”
Samatha is one-pointed mind, or the varying levels of concentrated attention. According to the Maitreya Buddha, there are nine distinct levels of Shamata. When compared to Raja Yoga, the degrees of Shamatha correspond to Pratyahara, Dharana, Dhyana, and Samadhi.