ec·de·mite noun orek·de·mite\ekˈdēˌmīt, ˈekdəˌm-\ (-s) Etymology: Swedish ekdemit, from Greek ekdēmos being away from home (from ek + dēmos deme, populace) + Swedish -it -ite — more at dem- : a yellow or green lead arsenate and chloride of uncertain composition occurring in crystals, masses, and crusts