bipectinate, -ated,a.|baɪˈpɛktɪneɪt, -eɪtɪd| [f. bi- prefix2 1 + pectinate, f. L. pecten, pectin-em comb.] Having two margins toothed like a comb. 1836–9Todd Cycl.Anat. & Phys. II. 892 The bipectinated antennæ of many moths.1870Rolleston Anim. Life 40 The four bipectinate gills.