Signac, Paul Syllabification: (Si·gnac, Paul)Pronunciation: /sēˈnyäk/Definition of Signac, Paul (1863–1935), French neo-Impressionist painter. A pointillist painter, his technique was characterized by the use of small dashes and patches of pure color rather than dots. Signac, Paul in other Oxford dictionaries Definition of Signac, Paul in the British & World English dictionary