Entry 2 senses · 2 variants Webster, 1913 Tisic · Tis·ic · IPA a. n. 01 a. Consumptive, phthisical. 1. Consumptive, phthisical. 02 n. Consumption; phthisis. See Phthisis. 1. Consumption; phthisis. See Phthisis. See: Phthisis