1. capable of being thrust forward or extended outward; able to protrude
Usage: chiefly used in zoology and anatomy to describe body parts or structures

Examples

• The fish has a protrusile mouth that extends forward to catch prey.
• Certain snails possess protrusile eyes on the tips of their upper tentacles.
• The protrusile jaw of the deep-sea fish allows it to swallow larger meals.
• Frogs use their protrusile tongues to capture insects with remarkable speed.
• The protrusile snout of the anteater is perfectly adapted for feeding on termites.