ashtanga
Concise Oxford English Dictionary © 2008 Oxford University Press:
ashtanga /aʃˈtɑːŋə/ (also astanga /asˈtɑːŋə/)
▶noun a type of yoga based on eight principles and consisting of a series of poses executed in swift succession, combined with deep, controlled breathing.
– origin from Hindi aṣṭaṇ or its source, Sanskrit ashṭaṅga ‘having eight parts’, from ashtán ‘eight’.
'ashtanga' also found in these Oxford entries:

