Able to be discerned or perceived; possible to see, understand, or distinguish.
From 'discern' (from Latin 'discernere', to distinguish) plus the suffix '-able' (capable of being). This variant spelling emphasizes the root 'cern' from Latin 'cernere'.
'Discernable' and 'discernible' are spelling variants—'discernable' preserves the Latin root more clearly, but 'discernible' won the modern popularity contest, showing how spelling standardization isn't always logical.
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