1. having sharp points or prickles; armed with small sharp projections
Usage: formal or technical; often used in biology and botany

Examples

• The aculeated leaves of the holly plant protect it from being eaten by herbivores.
• Under the microscope, the aculeated surface of the insect's exoskeleton was clearly visible.
• The cactus has an aculeated stem covered with sharp spines.
• Botanists classified the plant as aculeated due to its numerous small prickles.
• The aculeated edges of the sea urchin shell serve as a defense mechanism.