Entry 1 sense Webster, 1913 Dactyliology · Dac·tyl·i·ol·o·gy · IPA /ˌdæktɪlɪˈɒlədʒi/ 01 n. That branch of archæology which has to do with gem engraving. 1. That branch of archæology which has to do with gem engraving.(Fine Arts)