di ‧ dac ‧ tic /daɪˈdæktɪk, də-/ BrE AmE adjective
[ Date: 1600-1700 ; Language: Greek ; Origin: didaktikos , from didaskein 'to teach' ]
1 . speech or writing that is didactic is intended to teach people a moral lesson:
His novel has a didactic tone.
2 . someone who is didactic is too eager to teach people things or give instructions
—didactically /-kli/ adverb