/ Dictionary / Index P pectoral: Meaning and Definition of Find definitions for: pec•to•ral Pronunciation: (pek'tur-ul), [key] — adj. of, in, on, or pertaining to the chest or breast; thoracic. worn on the breast or chest. proceeding from the heart or inner consciousness. (of a vocal quality) appearing to come from resonance in the chest; full or deep. of or for diseases of the lungs. —n. a pectoral part or organ, as a pectoral muscle. See something worn on the breast for ornament, protection, etc., as a breastplate. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pectoral (Thesaurus) pectolite pectoral cross Related Content Daily Word Quiz: miscreant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language