Rajas: the intermediate principle of energy among the three qualities of nature

Rajasic: having the nature of Rajas (Kings)

Raktadhatu: blood

Raktamokshana: blood-letting (type of panchakarma)

Raktavaha srotas: circulatory system

Ranjaka pitta: form of pitta colouring the blood

Rasa: plasma, taste

Rasayana: Traditional Ayurvedic herbal or mineral preparation for longivity and rejuvenation

Rheumatism: Any of a large number of inflammatory conditions of the joints, ligaments or muscles, characterised by pain or limitation of movement

Rhinitis: Inflammation of the mucus membrane of the nose

Rigveda: type of veda

Ritucharya: seasonal behaviour

Roga: disease

Roopa: symptom

Ruksha: type of attribute, dry