Madai, ma'-dai (Heb.)–Media; Medes; sufficiency; measurability; indefinite capacity; middle portion; medium.

a Son, or descendants, of Japheth (Gen. 10:2). Madai refers to Media or the Medes.

Meta. The phase of being in man that lies between the outer or conscious thinking mind and the superconscious mind, or Spirit (middle portion); the psychic realm.