Greek ἔννοια, feminine noun

• the act of thinking, consideration, meditation
• a thought, notion, conception
• mind, understanding, will, manner of feeling, and thinking

From a compound of ἔν “in, with, by” and νοῦς “the mind”

En:

a primary preposition denoting (fixed) position (in place, time or state), and (by implication) instrumentality (medially or constructively), i.e. a relation of rest (intermediate between Eis, into, unto, to, towards, for, among and ek: a primary preposition denoting origin (the point whence action or motion proceeds), from, out (of place, time, or cause))

Nous:

1. the mind, comprising alike the faculties of perceiving and understanding and those of feeling, judging, determining: the intellectual faculty, the understanding; reason in the narrower sense, as the capacity for spiritual truth, the higher powers of the soul, the faculty of perceiving divine things, of recognising goodness and of hating evil; the power of considering and judging soberly, calmly and impartially
2. a particular mode of thinking and judging, i.e thoughts, feelings, purposes, desires