Assāsa Passāsa

(Breathing in  - Breathing out) 

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From Sanskrit:

आश्वस् āśvas [ā-śvas]
प्राश्वस् prāśvas [prā-śvas]

आ ā
- towards (the speaker).

प्र pra
- away

√ श्वस् śvas
- to pant [breathe heavily, as if exhausted] (RV.)
- to breathe (MBh.) (also = live)
- to cause to blow or breathe ; to cause heavy breathing (Suśr.)

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Ānāpāna

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Pali:

an
- to breathe

āna (ā-ana)
- inhalation (breathing towards)

pāna (pa-ana)
- exhalation (breathing away)

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