[{"Bold_text": "noun", "List Items": ["Anatomy.a seamlike union between two parts or halves of an organ or the like.", "Botany.(in certain ovules) a ridge connecting the hilum with the chalaza.a median line or slot on a cell wall of a diatom.", "(in certain ovules) a ridge connecting the hilum with the chalaza.", "a median line or slot on a cell wall of a diatom."]}]