nominative singular masculine, compound epithet; present participle (vedī) in attributive function
Analysis. sabbakāya (the whole body, sabba + kāya) + paṭisaṁvedī (experiencing in return, paṭi + saṁ + ved + ī). The compound describes one who is conscious of bodily sensations completely and simultaneously, a quality ascribed to the Buddha and advanced ascetics in states of heightened mindfulness.
Etymology. Builds on ved- (to feel, perceive), cognate with Latin vēdere (to see) and English wit (to know); saṁ intensifies the sensation, paṭi turns it back (inward), and sabba (all) extends it to the whole body. The phrase appears in the Aṅguttara Nikāya as a defining characteristic of the Buddha's perception.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
Lite mode — plain HTML for e-readers and old browsers. Full version