The quality of being expandible; the capacity or degree to which something can be expanded.
From 'expandible' (adjective variant of expandable) + '-ity' (noun-forming suffix). An alternate form of 'expandability' using the less common '-ible' spelling.
Expandibility and expandability mean the same thing, but expandability is more common in modern English—the '-able' spelling has largely won out over '-ible' in this word.
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