1650s, from Fr. didactique, from Gk. didaktikos "apt at teaching," from didaktos "taught," from didaskein "teach," from PIE base *dens- "wisdom, to teach, learn." Related: Didactically; didacticism.
didactic di·dac·tic (dī-dāk'tĭk) adj. Of or relating to medical teaching by lectures or textbooks as distinguished from clinical demonstration with patients.