pectinate pectinate pectinate may refer to: pectinate line, a line which divides the upper two thirds and lower third of the anal canal pectinate muscles, parallel ridges in the walls of the atria of the heart a salt of the heteropolysaccharide pectin look up pectinate in wiktionary, the free dictionary. this article is issued from wikipedia. the text is licensed under creative commons - attribution - sharealike. additional terms may apply for the media files.