A type of Pratimā (course of intensive penance);
a very intensified penance of extraordinary character, such as the twelve Bhikṣupratimās (of the ascetics) and the eleven Upāsakapratimās (of the lay followers).
upadhānaṃ- tapastatpratimopadhānapratimā dvādaśa bhikṣupratimā ekādaśopāsakapratimāḥ.
(Sthā 2.243 Vṛ Pa 61)