IPA: /ɪkˈstɛndəbl/
KK: /ɪkˈstɛndəbl/
Able to be made longer or larger in size or duration.
The extendible table can be adjusted to fit more guests during dinner.
Extendible → It is formed from "extend" (from Latin "extendere", meaning to stretch out) and "-ible" (meaning capable of). The word "extendible" means capable of being stretched out or made longer.
Think of something that can be 'stretched out' ('extend') and is 'capable of' ('-ible') being made longer.