/ Dictionary / Index S seigniory: Meaning and Definition of Find definitions for: seign•ior•y Pronunciation: (sēn'yu-rē), [key] — pl. -ior•ies. the power or authority of a seignior. a lord's domain. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: seigniory (Thesaurus) seigniorage seignorial Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language