From dia and nous; deep thought, properly, the faculty (mind or its disposition), by implication, its exercise -- imagination, mind, understanding.
see GREEK dia
see GREEK nous
1. the mind as the faculty qf understanding, feeling, desiring: Matthew 22:37; Mark 12:30 (Tr marginal reading brackets); Luke 10:27; Ephesians 1:18 Rec.; 2. understanding: 1 John 5:20. 3. mind, i. e. spirit (Latinanimus), way of thinking and feeling: Colossians 1:21; Luke 1:51; 2 Peter 3:1. 4. thought; plural contextually in a bad sense, evil thoughts: Ephesians 2:3, as in Numbers 15:39 μνησθήσεσθε πασῶν τῶν ἐντολῶν κυρίου ... καί οὐ διαστραφήσεσθε ὀπίσω τῶν διανοιῶν ὑμῶν.