Since the next lines of the Yoga Sutras text already contain the category of Samadhi used by Patanjali, at this stage it becomes fairly appropriate to start figuring out the meaning of this term, let alone that this notion probably comes as the most mystified one of all (well, maybe, except for the Chitta J). In order to understand the scale of its misunderstanding let us use the definition given in the Wikipedia [the Russian version of the Wiki – trans. note].
Samadhi (Sanskrit: समाधि, samādhi IAST, “wholeness, unity; implementation, performance; composure”) – in scope of the Hinduism and Buddhism meditative practices – it is the state when the very idea of personal individuality (but not the consciousness) disappears and there emerges the integrity of the perceiving subject and the perceived object. The Samadhi is the state of (spiritual) enlightenment achieved by means of meditation when the mind becomes very still and all contradictions between the internal and the external world (the subject and the object) vanish, when the individual consciousness as a microcosm merges with the cosmic absolute as a macrocosm. The Samadhi is the last stage of the Noble Eightfold Path that brings the person most close to the state of Nirvana.