Callimachus Syllabification: (Cal·lim·a·chus)Pronunciation: /kəˈliməkəs/Definition of Callimachus (circa 305-circa 240 bc), Greek poet and scholar. He wrote hymns and epigrams and was head of the library at Alexandria. Callimachus in other Oxford dictionaries Definition of Callimachus in the British & World English dictionary