-dom \-dom\ A suffix denoting:
   (a) Jurisdiction or property and jurisdiction, dominion, as in kingdom earldom.
   (b) State, condition, or quality of being, as in wisdom, freedom.

Note: It is from the same root as doom meaning authority and judgment. ?. See Doom.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Dom \Dom\, n. [Pg. See Don.]

1. A title anciently given to the pope, and later to other church dignitaries and some monastic orders. See Don, and Dan.

2. In Portugal and Brazil, the title given to a member of the higher classes.

Source: Webster's Revised Unabridged Dictionary (1913)