[pek-tuh-lahyt] /ˈpɛk təˌlaɪt/

a mineral, hydrous calcium sodium silicate, usually occurring in radiating groups of crystals in rock cavities.


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  • Pectoral

    [pek-ter-uh l] /ˈpɛk tər əl/ adjective 1. of, in, on, or pertaining to the chest or breast; thoracic. 2. worn on the breast or chest. 3. proceeding from the heart or inner consciousness. 4. Speech. (of a vocal quality) appearing to come from resonance in the chest; full or deep. 5. of or for diseases […]

  • Pectoral-cross

    noun, Ecclesiastical. 1. a cross worn on the breast by various prelates, as a designation of office.

  • Pectoral-fin

    noun 1. (in fishes) either of a pair of fins usually situated behind the head, one on each side, and corresponding to the forelimbs of higher vertebrates. noun 1. either of a pair of fins, situated just behind the head in fishes, that help to control the direction of movement during locomotion

  • Pectoral-girdle

    noun 1. (in vertebrates) a bony or cartilaginous arch supporting the forelimbs. 2. Also called shoulder girdle. (in humans) the bony arch formed by the clavicles, or collarbones, and scapulas, or shoulder blades. noun 1. a skeletal support to which the front or upper limbs of a vertebrate are attached pectoral girdle n. A bony […]

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