1. having a series of small, rounded projections or notches along an edge or margin
Usage: commonly used in biology and botany to describe leaf edges or other natural structures
2. having a pattern of small, square notches or indentations, as in a battlement or fortification
Usage: architectural term

Examples

• The crenulated edge of the oak leaf provided a distinctive identifying feature.
• Medieval castles often featured crenulated walls for defensive purposes.
• The crenulated margin of the shell made it easy to distinguish from similar species.
• The architect designed a crenulated roofline to give the building a more dramatic appearance.
• Under the microscope, the crenulated surface of the cell membrane was clearly visible.
• The crenulated coastline created numerous small bays and inlets.