Capable of being applied or put into use; suitable or relevant for application to a particular situation.
From Latin 'applicabilis,' derived from 'applicare' (to attach or apply), from 'ad-' (to) plus 'plicare' (to fold). The suffix '-able' makes it an adjective meaning 'capable of being.'
The root 'plicare' (to fold) connects 'appliable' to 'complicate,' 'duplicate,' and 'fold'—they all literally deal with folding or attaching things together!
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