/ Dictionary / Index P Placidyl: Meaning and Definition of Find definitions for: Plac•i•dyl Pronunciation: (plas'i-dil, plä'si-), [key] — Pharm. Trademark. Pharm. Trademark. a brand of ethchlorvynol. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: placidyl (Thesaurus) Plácido's disk plack Related Content Daily Word Quiz: cur Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language