Definition - What does Apas mean?
Apas is one of the five important tattvas, which, according to Hindu philosophy, is Truth or Reality. A Sanskrit word, apas means "water." Earth, water, fire, air and ether are the five important tattvas out of which the water element refers to the apas tattva.
Apas is associated with the color white, the sense of taste and the trait of courage. The water element is represented by an upturned crescent.
Yogapedia explains Apas
The five tattvas, including the apas tattva, are present everywhere. Balancing the tattvas is the best way to stay healthy. Physical manifestations of the water element are the kidneys, the lymphatic system and the reproductive organs. The svadisthana (root) chakra is also associated with apas.
Ayurveda combines the tattvas to classify them as doshas. Apas tattva, along with prithvi tattva, form the kapha dosha. Akasha and vayu tattva combine as the vata dosha. Finally, the agni tattva is the pitta dosha. Ayurveda treats illnesses by harmonizing and balancing the three doshas.
Hatha yoga practice helps to maintain balance of the five tattvas in the body, thereby promoting physical and mental health.