A dhāraṇī is a Sanskrit term for a type of ritual speech similar to a mantra.
The word dhāraṇī derives from a Sanskrit root √dhṛ meaning "to hold or maintain".
Ryuichi Abe and Jan Nattier suggest that a dhāraṇī is generally understood as a mnemonic which encapsulates the meaning of a section or chapter of a sutra. Dhāraṇīs are also considered to protect the one who chants them from malign influences and calamities.
The Japanese Buddhist monk Kūkai drew a distinction between dhāraṇī and mantra and used it as the basis of his theory of language. Kūkai claims that mantra is restricted to esoteric Buddhist practice whereas dhāraṇī is found in both esoteric and exoteric ritual.
Kūkai classified mantras as a special class of dhāraṇīs and argued that every syllable of a dhāraṇī was a manifestation of the true nature of reality – in Buddhist terms, that all sound is a manifestation of śūnyatā or emptiness of self-nature. Thus, rather than being devoid of meaning, Kūkai suggests that dhāraṇīs are in fact saturated with meaning – every syllable is symbolic on multiple levels.
Dhāraṇā (from Sanskrit धारणा) is translated as "collection or concentration of the mind (joined with the retention of breath)", or "the act of holding, bearing, wearing, supporting, maintaining, retaining, keeping back (in remembrance), a good memory", or "firmness, steadfastness, ... , certainty". This term is related to the verbal root dhri to hold, carry, maintain, resolve. Dharana is the name.
Dhāraṇā is the sixth stage, step or limb of eight elucidated by Patanjali's Ashtanga Yoga or Raja Yoga. For a detailed account of the Eight Limbs, refer to the Yoga Sutras of Patanjali.
Dhāraṇā may be translated as "holding", "holding steady", "concentration" or "single focus". The prior limb Pratyahara involves withdrawing the senses from external phenomena. Dhāraṇā builds further upon this by refining it further to ekagrata or ekagra chitta, that is single-pointed concentration and focus, which is in this context cognate with Samatha. Maehle (2006: p. 234) defines Dharana as: "The mind thinks about one object and avoids other thoughts; awareness of the object is still interrupted."