/ Dictionary / Index M Merionethshire: Meaning and Definition of Find definitions for: Mer•i•on•eth•shire Pronunciation: (mer"ē-on'ith-shēr", -shur), [key] — n. a historic county in Gwynedd, in N Wales. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. merino merisis Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language