1. resembling or having the structure of a comb; comb-like in appearance or arrangement
Usage: technical; biology
2. having a fine, regular, tooth-like or ridge-like pattern
Usage: technical; geology or mineralogy

Examples

• The pectinous fins of the fish allowed it to move with precision through the water.
• Under the microscope, the pectinous structure of the insect's antenna was clearly visible.
• The mineral displayed a pectinous surface with regularly spaced ridges.
• Pectinous gills in certain mollusks help filter food from the water.
• The fossil showed a pectinous pattern that helped scientists identify the species.