The term "extendable" refers to the ability of an object or concept to be lengthened, expanded, or increased in size or capacity. This can apply to various items, such as extendable tables that can be adjusted to accommodate more people, or extendable phone chargers that can reach distant outlets. In technology, "extendable" often describes software or systems that can be enhanced with additional features or functionalities. For example, extendable software frameworks allow developers to add new modules or plugins, making the system more versatile and adaptable to changing needs.