[{"Bold_text": "noun", "List Items": ["Geometry.an intersecting line, especially one intersecting a curve at two or more points.", "Trigonometry.(in a right triangle) the ratio of the hypotenuse to the side adjacent to a given angle.(originally) a line from the center of a circle through one extremity of an arc to the tangent from the other extremity.the ratio of the length of this line to that of the radius of the circle; the reciprocal of the cosine of a given angle or arc.:sec", "(in a right triangle) the ratio of the hypotenuse to the side adjacent to a given angle.", "(originally) a line from the center of a circle through one extremity of an arc to the tangent from the other extremity.", "the ratio of the length of this line to that of the radius of the circle; the reciprocal of the cosine of a given angle or arc.:sec"]}, {"Bold_text": "adjective", "List Items": ["cutting or intersecting, as one line or surface in relation to another."]}]