/ Dictionary / Index M Merthiolate: Meaning and Definition of Find definitions for: Mer•thi•o•late Pronunciation: (mur-thī'u-lāt"), [key] — Pharm., Trademark. Pharm.,Trademark. a brand of thimerosal. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: merthiolate (Thesaurus) mertensia Merthyr Tydfil Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language