1. a segmented sensory appendage found near the mouth of arthropods, used for touching and tasting
Usage: biology; zoology

Examples

• The spider used its palpus to examine the prey before feeding.
• Each palpus contains sensory receptors that help the insect identify food.
• The maxillary palpus is located near the insect’s jaw.
• Scientists studied the structure of the beetle’s palpus under a microscope.
• The palpus helps arthropods navigate their environment through touch.
• Male spiders often have enlarged palpi used during mating.