[in.doc.tri.nate] vt -nat.ed ; -nat.ing [prob. fr. ME endoctrinen, fr. MF endoctriner, fr. OF, fr. en- + doctrine doctrine] (1626) 1: to instruct esp. in fundamentals or rudiments: teach
2: to imbue with a usu. partisan or sectarian opinion, point of view, or principle -- in.doc.tri.na.tion n -- in.doc.tri.na.tor n