[{"Bold_text": "noun", "List Items": ["a spiral.", "Geometry.the curve formed by a straight line drawn on a plane when that plane is wrapped around a cylindrical surface of any kind, especially a right circular cylinder, as the curve of a screw. Equation:x=asin?,y=acos?,z=b?.", "Architecture.a spiral ornament.(in a Corinthian capital) either of two scrolls issuing from a cauliculus.Compare Corinthian(def2) Corinthian(def2).", "a spiral ornament.", "(in a Corinthian capital) either of two scrolls issuing from a cauliculus.Compare Corinthian(def2) Corinthian(def2).", "Anatomy.the curved fold forming most of the rim of the external ear.", "Biochemistry. alpha helix alpha helix."]}]