[{"Bold_text": "noun", "List Items": ["the height of anything above a given planetary reference plane, especially above sea level on earth.Synonyms: elevation", "extent or distance upward; height.Antonyms: depth", "Astronomy.the angular distance of a heavenly body above the horizon.", "Geometry.the perpendicular distance from the vertex of a figure to the side opposite the vertex.the line through the vertex of a figure perpendicular to the base.", "the perpendicular distance from the vertex of a figure to the side opposite the vertex.", "the line through the vertex of a figure perpendicular to the base.", "Usuallyaltitudes.a high place or region:mountain altitudes.", "high or important position, rank, etc."]}]