Breadcrumb Home > 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: dishabille Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language