G1271 διάνοια (diánoia)

KJV renderings: imagination, mind, understanding
Strong's definition: deep thought, properly, the faculty (mind or its disposition), by implication, its exercise
Derivation: from G1223 (διά) and G3563 (νοῦς);

From James Strong's public-domain dictionaries (G), JSON edition by OpenScriptures (CC-BY-SA). Every dotted-underline word in the text links here.