Conductor Definition. In science, a conductor is a material which permits a flow of energy. A material which allows the flow of charged particles is an electrical conductor. A material which allows the transfer of thermal energy is a thermal conductor or heat conductor. Although electrical and thermal conductivity is most common, other types of energy may be transferred.
Define polymyositis: inflammation of several muscles at once; specifically : an inflammatory muscle disease of unknownâ¦ â polymyositis in a sentence inflammation of several muscles at once; specifically : an inflammatory muscle disease of unknown cause that affects muscles and chiefly skeletalâ¦ See the full definition
Print. Dermatomyositis is a rare connective tissue disease characterized by inflammation of the muscles and skin. As dermatomyositis progresses, muscle tissue is wasted and gradually replaced by scar tissue. Muscle weakness is the primary symptom.ymptoms of Dermatomyositis. 1  Weakness and stiffness are the most common symptoms. 2  Muscle pain is less frequent; when muscle pain does occur, it commonly involves pain in the muscles of the shoulder and hip. 3  The pain may make it difficult to perform such simple actions as brushing hair or getting out of a chair.