Entry 1 sense Webster, 1913 Demosthenic · Dem·os·then·ic · IPA /ˌdɛməsˈθɛnɪk/ 01 a. Pertaining to, or in the style of, Demosthenes, the Grecian orator. 1. Pertaining to, or in the style of, Demosthenes, the Grecian orator.