1. capable of being extended or stretched out; able to extend or stretch
Usage: formal or technical; often used in biology or anatomy to describe structures that can be lengthened or protruded

Examples

• The snake's jaw is extensile, allowing it to swallow large prey.
• Some fish have extensile mouths that can protrude to catch food.
• The extensile nature of the material makes it ideal for flexible applications.
• Certain mollusks possess extensile tentacles for sensing their environment.
• The extensile properties of the fabric allow it to stretch without tearing.