Man·dae·an also Man·de·an 
(măn-dēən)
(măn-dēən)n.
1. A member of a Gnostic sect historically concentrated in Iraq and Iran but now largely dispersed due to war and persecution.
2. Mandaic.
[Mandaic mandaya, having knowledge, from manda, knowledge, from earlier Aramaic manda', madda', infinitive of yəda', to know; see ydʿ in the Appendix of Semitic roots.]
Man·daean adj.