प्रणु [ praṇu ] [ pra-ṇu ] ( Preverb. [ √ nu ] ) P. Ā. [ -navati ] , [ °te ] , to roar , bellow , sound , reverberate Lit. RV. Lit. AV. ; P. [ -ṇauti ] , to make a humming or droning sound ; (esp.) to utter the syllable [ om ] Lit. Br. Lit. ChUp. Lit. ŚrS.