[{"Bold_text": "noun", "List Items": ["Electricity.an electric conductor wound as a helix with small pitch, or as two or more coaxial helices, so that current through the conductor establishes a magnetic field within the conductor.", "Also calledso?lenoid switch?.a switch controlled by such an arrangement, in which a metal rod moves when the current is turned on: used in automotive starting systems.", "Meteorology.a space formed by the intersection of isobaric and isosteric surfaces."]}]