-dom (Noun) — Someone having non-domiciled tax status in a country; i.e. paying tax only on income in that country or money brought into that country, with other overseas income being untaxed.
-dom (Noun) — A title anciently given to the pope, and later to other church dignitaries and some monastic orders.
-dom (Noun) — In Portugal and Brazil, the title given to a member of the higher classes.
-dom (Other) — State or condition.