neuronophagia neu·ron·o·pha·gia (n&oobreve;r'ŏn-ə-fā'jə, ny&oobreve;r'-) or neu·ro·noph·a·gy (n&oobreve;r'ə-nŏf'ə-jē, ny&oobreve;r'-) n. Destruction of nerve cells by phagocytes.