myrmecophilePronunciation: /ˈməːmɪkə(ʊ)fʌɪl, məˈmiːkə(ʊ)-/Definition of myrmecophile noun Biology an invertebrate or plant which has a symbiotic relationship with ants, such as being tended and protected by ants or living inside an ants' nest. Derivatives myrmecophilous adjective myrmecophily noun Origin: late 19th century: from Greek murmēx, murmēk- 'ant' + -philemyrmecophile in other Oxford dictionaries Definition of myrmecophile in the US English dictionary