adjective

extensible

ik-STEN-suh-bul/ɪkˈstɛnsəbəl/

Able to be made longer or expanded.

The extensible shelving has connector holes ready to accept another matching module.

Extensible: modular wooden shelving unit with empty connector holes on its right side and an additional matching shelf module ready to attach; obvious ability to expand.

Etymology

exLatinout

+tensLatinto stretch

+ibleFrenchcapable of being

The “stretch out” base becomes a description of capability: something extensible can be extended. That capacity can involve physical stretching or enlargement through additions.

In context

Chrome for Developers423:37

Now, the new idea is this thing called the extensible web. And it says that rather than building simple APIs for specific things, we should be g getting low-level deep powerful APIs that enable a much broader range of things.

Progressive Web App Summit 2016 - Day 1

More examples

This extensible dining table makes room for extra guests.
The extensible software supports new features through optional modules.
An extensible frame adjusts to fit mattresses of different lengths.

Forms

extensible

extensibility noun — The capacity to be lengthened or expanded.

Similar words

expandable: Emphasizes increasing overall size or capacity, not just length.
extendable: More often describes objects that physically stretch or lengthen.