argyrophilicPronunciation: /ˌɑːdʒɪrə(ʊ)ˈfɪlɪk/Definition of argyrophilic adjective Biology (of cells or their contents) readily stained black by silver salts. Derivatives argyrophil adjective argyrophilia noun Origin: 1930s: from Greek arguro- (from arguros 'silver') + -philic (see -philia)