As he burns, as he is keen and fierce and endued with the great prowess and as he devours flesh, blood and marrow, he is called Rudra.
यनिर्दहति यत् तीक्ष्णो यदुग्रो यत् प्रतापवान्। मांसशोणितमज्जादो यत् ततो रुद्र उच्यते॥